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Grade 10 Physics final revsion

Total questions: 104

Worksheet time: 2hrs 37mins

Name
Class
Date
1.

What is the unit of measurement for resistance?

a)

Voltage

b)

Ampere

c)

Watts

d)

Ohms

2.
What is Resistance?
a)
the degree to which a circuit component opposes the passage of an electric current, causing energy dissipation
b)
How hard the energy is pushed
c)
The amount of charges that pass by a given point per second
d)
None of the above
3.
Which resistor will prevent the most current flow?
a)
1 ohm
b)
100 ohms
c)
1000 ohms
d)
0.5k ohms
4.
How does resistance affect current?
a)
less resistance - less current
b)
more resistance - less current
c)
more resistance - more current
d)
resistance does not affect current
5.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
6.

What happens to resistance when the length of the wire increases?

a)

Stays the same

b)

Increases

c)

Decreases

7.

How do you calculate resistance?

a)

Current x Voltage

b)

Voltage x Power

c)

Voltage ÷ Current

d)

Current ÷ Voltage

8.

What effect does a hotter temperature have on resistance?

a)

No effect

b)

Increases resistance

c)

Decreases resistance

d)

Stays the same

9.

What other factor of a wire could affect its resistance?

a)

Material its made of

b)

How shiny it is

c)

Colour

10.

How do you calculate current from voltage and resistance?

a)

Current = voltage x resistance

b)

Current = resistance x power

c)

Current = voltage ÷ resistance

d)

Current = resistance ÷ voltage

11.
Which word means how hard it is for electrons to flow?
a)
Current
b)
Voltage
c)
Resistance
d)
Power
12.
This is an example of a _______ circuit
a)
open
b)
series
c)
parallel
d)
square
13.
If the Voltage is increased and the resistance stays the same, Current will
a)
Increase
b)
Decrease
c)
Stay the same
d)
Not enough info
14.
If the Voltage stays the same and Resistance is increased, Current will 
a)
Increase
b)
Decrease
c)
Stay the same
d)
Not enough info
15.
In a series circuit, which of the following is the same throughout the circuit?
a)
Resistance
b)
Voltage
c)
Current
d)
Power
16.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
17.
What does power mean?
a)
Joules transferred per second
b)
Electron flow per second
c)
Speed of electrons
d)
Electron energy
18.
In a series circuit, which of the following will vary based on the resistor?
a)
Power
b)
Voltage
c)
Current
d)
None of the above
19.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
20.
What is the unit of power?
a)

Ohms

b)
Volts
c)
Amps
d)

Watts

21.
What is voltage?
a)

The flow of protons

b)
The number of charged particles that pass each second
c)
The difference in potential energy of charged particles
d)
The rate at which energy is being transformed
22.
What voltage is needed to produce 2A of current through a 10Ω resistor?
a)
20V
b)
0.2V
c)
5V
d)
2V
23.
A circuit with 3 resistors, 20 Ohms, 10 Ohms, and 20 Ohms are in series. What is the total resistance?
a)
43 Ohms
b)
50 Ohms
c)
60 Ohms
d)
33 Ohms
24.
Battery cells are connected in series to _______
a)
Increase voltage output
b)
Decrease voltage output
c)
Increase current capacity
d)
Decrease current capacity
25.
AC stands for ___.
a)
Alternating Current
b)
Attraction Connections
26.
What does the W stand for on the ohm's law wheel?
a)
amps
b)
volts
c)
watts
d)
ohms
27.
What does the I stand for on the ohm's law wheel?
a)
current
b)
voltage
c)
power
d)
ohms
28.
What is the wattage rating of a 240 volt, 6 amp device?
a)
1.44
b)
14.4
c)
144
d)
1440
29.
what is the power of a lamp whose current is 6 A and the voltage across it is 120 V?
a)
120 W
b)
720 W
c)
16 W
d)
10 W
30.
Potential difference is another term for
a)
current
b)
voltage
c)
energy
d)
watts
31.
What would the voltmeter read
a)
1V
b)
2V
c)
3V
d)
6V
32.
a)

2 V

b)

5 V

c)

10 V

d)

20 V

33.
What is voltage?
a)
The amount of electric potential energy per one coulomb of charge
b)
The amount of 1 coulomb of charge per unit of potential energy
c)
The number of volts per coulomb
d)
The amount of electric potential energy per volt
34.

The difference in electrical potential energy between two places is called …………...

a)

resistance

b)

friction

c)

induction

d)

voltage

35.

How much work is required to move 3.0 coulombs of electric charge a distance of 0.010 meter through a potential difference of 9.0 volts?

a)

3.0 x 10-2 J

b)

3.0 J

c)

27 J

d)

2.7 x 103 J

36.

Moving 4.0 coulombs of charge through a circuit requires 48 joules of electric energy. What is the potential difference across this circuit?

a)

190 V

b)

12 V

c)

4.0 V

d)

48 V

37.

Electric potential energy is greatest at point...

a)

A

b)

B

38.

Moving an electron within an electric field would change the ____ the electron.

a)

mass of

b)

amount of charge on

c)

potential energy of

39.

The electrical energy used if a charge of 5 C is supplied by a 12 V cell is....

a)

2.2 A

b)

60 A

c)

2.2 J

d)

60 J

40.

What is the voltage of a cell if it uses 4.2 J of energy as it pushes 6 C of charge round a circuit?

a)

0.7 v

b)

26 V

c)

0.7 V

d)

26 v

41.

The circuit in the diagram contains two capacitors connected in parallel. What is the total capacitance of the circuit?

a)

100 μF\mu F  

b)

65 μF\mu F

c)

35 μF\mu F

d)

30 μF\mu F

42.

The circuit in the diagram contains two capacitors connected in series. The total capacitance of the circuit is 12 µF.What is the capacitance 𝐶?

a)

19 μF\mu F  

b)

21 μF\mu F

c)

16 μF\mu F

d)

13 μF\mu F

43.

When is an object said to be charged

a)

When it has more charges than it can store

b)

When it can accept no more charges

c)

When the object has equal number of electrons and protons

d)

None of the above

44.

The simplest form of capacitor is made out of

a)

three metal plates and between the plates is an insulating material

b)

two metal plates and between the plates is a dielectric material

c)

one metal plate and a dielectric material

45.

Which of the following is symbol of capacitor ?

a)
b)
c)
d)
46.

What is the unit of V?

a)

Farad

b)

No unit

c)

Coloumb

d)

Volt

47.

What is the unit of capacitance

a)

Ohm

b)

Henry

c)

Farad

d)

Watt

48.

Tick all the factors that affect capacitance below:

a)

Area

b)

Dielectric

c)

Distance

d)

Power Rating

49.

When power is supplied to a circuit that includes a capacitor - the capacitor ______________up.

a)

charges

b)

discharge

50.

There are different types of capacitors vary depending on their construction, types and sizes.

a)

True

b)

False

51.

The two parallel plates hold +600 µC and -600 µC of charges respectively when 20 V potential difference is applied across the plates. What is its capacitance?

a)

60µF

b)

-60µF

c)

30µF

d)

-30µF

52.
If the capacitance is 47μF, and the voltage difference across the capacitor terminals is 6V, then the energy stored in that capacitor is:
a)
846×10-6Joule
b)
7.23×10-3 Joule
c)
6.76×10-5Joule
d)
5.94×10-2Joule
53.

Draw a circuit with a battery connected to four resistors, R1, R2, R3, and R4, as follows. Resistors R1 and R2 are connected in parallel with each other, resistors R3 and R4 are connected in parallel with each other, and both parallel sets of resistors are connected in series with each other across the battery.

a)
b)
c)
d)
54.

How to you calculate the total resistance in a series circuit?

a)

R1 + R2+ R3

b)

R1 - R2 - R3

c)

1/R1 + 1/R2 + 1/R3

d)

R1 = R2 = R3

55.

This is the symbol for a...

a)

Motor

b)

Ammeter

c)

Bulb

d)

Voltmeter

56.

A student carries out an experiment and plots the V-I graph of three samples of nichrome wire with resistances R1 R2 and R3 respectively. Which of the following is high ?

a)

R1 = R2 = R3

b)

R1 > R2 > R3

c)

R3 > R2 > R1

d)

none of these

57.

The diagram shows a circuit with a 3.0 Ω resistor and a 2.0 Ω resistor connected in parallel. The switch is open, and the ammeter reads 2.0A. The switch is now closed and the ammeter reads the total current in both resistors. What is the ammeter reading with the switch closed?

a)

1.2 A

b)

3.0 A

c)

4.0 A

d)

5.0 A

58.

A circuit contains four ammeters A, B, C and D, and three resistors with different values. Which ammeter shows the largest reading?

a)

A

b)

B

c)

C

d)

D

59.
The total current going through the battery of this circuit is
a)
0.35 amps
b)
0.0286 amps
c)
0 amps
d)
9 amps
60.

As you go up a hill…

a)

Potential energy increases and kinetic energy decreases 

b)

Potential energy will remain constant

c)

Kinetic energy increases and potential energy decreases

d)

Kinetic energy will remain constant

61.

FOR THE FOLLOWING QUESTION, YOU MUST PICK 2 ANSWERS:

How does height effect gravitational potential energy? (select 2 answers)

a)

As height decreases potential energy increases.

b)

As height decreases, potential energy decreases.

c)

As height increases, potential energy increases.

d)

As height increases potential energy decreases.

62.

What is energy transformation?

a)

When energy disappears.

b)

When energy changes from on form to another.

c)

When energy is created.

d)

When energy is destroyed.

63.

Choose the image below in which the object will have the largest amount of potential energy...

a)
b)
c)
d)
64.

What is kinetic energy?

a)

Energy of motion

b)

Stored energy

c)

Energy of sound

d)

Energy of heat

65.

What is potential energy?

a)

Energy of motion

b)

Stored energy

c)

Energy of light

d)

Energy of heat

66.

Which is NOT a type of energy?

a)

Light

b)

Heat

c)

Water

d)

Chemical

67.

A cyclist has a mass of 55 kg. His bike has a mass of 20 kg. If the cyclist is on his bike and moving at 12.5 m/s, what is his kinetic energy?

a)

11,718 J

b)

938 J

c)

9,188 J

d)

8,594 J

68.

What is the potential energy of a loose brick that is 2.5 kg and is at a height of 125 m?

g = 9.8

a)

3,063 J

b)

313 J

c)

781 J

d)

7,656 J

69.

If the height of an object increases, how would the potential energy change?

a)

Increase

b)

Decrease

c)

Stay the same

d)

Go to zero

70.

If the mass of an object increases, how would the potential energy change?

a)

Increase

b)

Decrease

c)

Stay the same

d)

Go to zero

71.
How far will an object move in 12 seconds if it is traveling at a velocity of 8 m/s?
a)
96 m
b)
0.7 m
c)
20 m
d)
4 m
72.
How much KE does a moving 6 kilogram object have if it moves with a velocity of 3 m/s?
a)
27 J
b)
18 J
c)
9 J
d)
2 J
73.

Efficiency can be calculated using either total energy transfers or power inputs and outputs

a)

true

b)

false

74.

Power depends on speed

a)

True

b)

False

75.

Work done is the same thing as energy transferred

a)

True

b)

False

76.
What is the formula for Kinetic Energy?
a)
PE = m*g*h
b)
KE = 1/2m*v2
c)
W = F*d
d)
P = W/t
77.
If 150 Joules of work is needed to move a box 10 meters, what force was used? 
a)
1500 N
b)
15 N
c)
1.5 N
d)
150 N
78.
A 5000N block is lifted 10 m. How much work was done?
a)
50000 J
b)
5000 J
c)
500 J
d)
50 J
79.

Is work a scalar or vector quantity?

a)

vector

b)

scalar

c)

both

d)

none of the above

80.

If you exert a force of 10.0 N to lift a box a distance of 3 m, how much work do you do?

a)

30J

b)

300 J

c)

90 J

d)

900 J

81.

Work is defined by _____________.

a)

force times time

b)

force devided by time

c)

force times distance

d)

force divided by distance

82.
Which of the following statements is false about electric field lines
a)
electric field lines cannot cross
b)
electric field lines point away from positive charge
c)
electric field lines are always straight lines
d)
electric field lines show how a proton would move in an electric field
83.

the electric filed E surrounds the electrical charge Q1 if the electric force is 10 N and Q2 is 2 coulombs?

a)

20 N.c

b)

5 N.c

c)

5 N/c

d)

20 N/c

84.

Which diagram correctly shows the field lines between two like charges?

a)

A

b)

B

c)

Both

d)

Neither

85.
In the diagram below, P is a point near a negatively charged sphere. Which direction best represents the direction of the electric field at point P?
a)
Right
b)
Left
c)
Up 
d)
Down
86.

What is the voltage across the plates of the capacitor if the capacitance is 10 µF and the Charge stored is 30 µC?

a)

0.333 V

b)

3 V

c)

300 V

87.

The capacitance of a parallel-plate capacitor is:

a)

proportional to the plate area

b)

independent of any material inserted between the plates

c)

proportional to the charge stored

d)

proportional to the potential difference of the plates

88.
With respect to the capacitor, which relationship is true?
a)
C = Q/V
b)
V = C×Q
c)
Q = C/V
d)
Q = V/C
89.

How much charge must pass by a point in 10 s for the current to be 0.50 A?

a)

0.05C

b)

5.0C

c)

20C

d)

2.0C

90.

What charge do electrons have?

a)

+1

b)

-2

c)

-1

d)

0

91.

A charge of 6C flows in 4s. What is the current?

a)

10A

b)

24A

c)

1.5A

d)

2A

92.

Current can be defined as the _____________ of flow of electric charge

a)

Speed

b)

Time

c)

Rate

d)

Strength

93.
As the resistance in a circuit increases, the electric current __________.
a)
increases
b)
decreases
c)
stays the same
94.
Which formulas represents Ohm's law?
a)
V=IR
b)
R=IV
c)
I=RV
95.
Which subatomic particles have a positive charge?
a)
neutrons
b)
electrons
c)
protons
96.

The voltage drop across each resistance of a series combination of resistance is directly proportional to the corresponding resistance

a)

Incorrect

b)

Correct

c)

Sometimes only

d)

Depends on value of voltage

97.

the resultant resistance in series combination of three resistance 1 ohm 2 ohm and 3 ohm is

a)

3 ohm

b)

6 ohm

c)

9 ohm

d)

12 ohm

98.

the resultant resistance in parallel combination of three resistance 1 ohm 2 ohm and 3 ohm is

a)

3/11 ohm

b)

4/11 ohm

c)

5/11 ohm

d)

6/11 ohm

99.

The correct relationship for electric energy is given by

a)

W = I²R t

b)

W= I³ R t

c)

W= I R³ t

d)

W= I R t³

100.

 The equivalent capacitance of three capacitors with capacitance  C1, C2 and C3C_1,\ C_2\ and\ C_3  connected in series is 

a)

C=C1+C2+C3C=C_1+C_2+C_3  

b)

1C=1C1+1C2+1C3\frac{1}{C}=\frac{1}{C_1}+\frac{1}{C_2}+\frac{1}{C_3}  

c)

C=1C1+1C2+1C3C=\frac{1}{C_1}+\frac{1}{C_2}+\frac{1}{C_3}  

d)

1C=1C1×1C2×1C3\frac{1}{C}=\frac{1}{C_1}\times\frac{1}{C_2}\times\frac{1}{C_3}  

101.

 The equivalent capacitance of three capacitors with capacitance  C1, C2 and C3C_1,\ C_2\ and\ C_3  connected in parallel is 

a)

C=C1+C2+C3C=C_1+C_2+C_3  

b)

1C=1C1+1C2+1C3\frac{1}{C}=\frac{1}{C_1}+\frac{1}{C_2}+\frac{1}{C_3}  

c)

C=1C1+1C2+1C3C=\frac{1}{C_1}+\frac{1}{C_2}+\frac{1}{C_3}  

d)

C=C1C2C3C=C_1C_2C_3  

102.

Three capacitors of 1.0 µF, 1.5 µF, and 2.0 µF are connected in series. Find the combined capacitance.

a)

4.5 µF

b)

4.0 µF

c)

2.2 µF

d)

0.46 µF

103.

If three 4.0 µF capacitors are connected in parallel, what is the combined capacitance?

a)

12 µF

b)

0.75 µF

c)

8.0 µF

d)

0.46 µF

104.

Capacitor stores _______________

a)

Charge

b)

Voltage

c)

Energy

d)

Money.. Lots of money

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