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LewLew Midterm Physics 1st

Total questions: 59

Worksheet time: 1hrs 28mins

Name
Class
Date
1.
What types of charges attract?
a)

Positive and Positive

b)

Positive and Neutral

c)

Negative and Neutral

d)

Positive and Negative

2.
What charge does a proton have?
a)

negative (-)

b)

positive (+)

c)

neutral or no charge (0)

3.
What charge does an electron have?
a)

negative (-)

b)

positive (+)

c)

neutral or no charge (0)

4.
If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?
a)

A positive charge.

b)

A negative charge.

c)

A neutral charge

d)

No charge at all

5.
Is this circuit open or closed?
a)

Closed

b)

Open

6.

What is an electric current?

a)

a build up of electrons

b)

the difference in charge between 2 points

c)

the flow of electrons over a circuit

d)

the opposition to flow of electrons

7.

The wattage value for any resistor is equal to ____.

a)

I X R

b)

E/R

c)

I X E

d)

I/R

8.

Total series circuit wattage is equal to source voltage ____.

a)

multiplied by the voltage value going through any resistor

b)

multiplied by the current value going through any resistor

c)

divided by the current value going through any resistor

d)

divided by the voltage applied to the circuit and the total resistance of the circuit

9.

Using the circuit shown solve for total power dissipated in this circuit.

a)

20 watts

b)

30 watts

c)

1.8 Kilowatts

d)

180 watts

10.

When a resistor in a series circuit is replaced by another resistor with an increased resistance value, the total circuit current will __________.

a)

stay the same

b)

decrease

c)

increase

d)

double in value

11.

What happens to total current in a series circuit when the total voltage stays the same, circuit resistance decreases, current will ____________.

a)

increase

b)

Stay the same

c)

Decrease

12.
Voltage is measured in __.
a)

volts.

b)

watts.

c)

coulombs. 

13.
What would the voltmeter read
a)

1V

b)

2V

c)

3V

d)

6V

14.
Which Voltmeter will give the lowest reading?
a)

V1

b)

V2

c)

V3

15.

What is this symbol?

a)

Cell

b)

Switch

c)

Bulb

d)

Resistor

16.

This switch is open.

a)

True

b)

False

17.
This is the symbol for a ...
a)

Wire

b)

Battery

c)

Buzzer

d)

Fuse

18.
a)

Closed switch

b)

Push switch

c)

Trap door

d)

AC Power supply

19.

What is a conductor?

a)

Material that does NOT transfer energy.

b)

Materials that are connected to circuits.

c)

Materials that transfer energy.

d)

Materials that

20.
An insulator is a material that:
a)

Transfers thermal and electrical energy

b)

Transfers electrical energy and slows thermal energy

c)

Slows electrical energy and allows thermal energy to pass

d)

Slows thermal and electrical energy from transfering

21.
A great conductor of energy is:
a)

wood

b)

plastic

c)

metal

d)

cloth

22.
What object would best complete this circuit?
a)

A battery

b)

a peice of yarn

c)

an insulator

d)

a conductor

23.
Mittens help keep your hands warm in winter because:
a)

They are conductors of heat.

b)

They are fuzzy.

c)

They are conductors of electrical energy.

d)

They are insulators.

24.
The plastic covering is there to:
a)

Provide a conductor for electrical energy to flow.

b)

Provide an insulator so that electrical energy will not pass outside of the wires.

c)

Provide a conductor so that electrical energy can NOT flow.

d)

Provide an insulator so that electrical energy can flow.

25.
What is voltage measured in?
a)

Ω (Ohms)

b)

V (Volts)

c)

A (Amps)

d)

W (Watts)

26.
What is current measured in?
a)

Ω (Ohms)

b)

V (Volts)

c)

A (Amps)

d)

W (Watts)

27.
How do you calculate voltage?
a)

Current X Resistance

b)

Resistance ÷ Current

c)

Current ÷ Resistance

d)

Measure it with a ruler

28.
What voltage is needed to cause a 5A current flow through a 2Ω resistor?
a)

10V

b)

2.5V

c)

7V

d)

0.4V

29.
What voltage is needed to cause a 2A current flow through a 10Ω resistor?
a)

5V

b)

0.2V

c)

20V

d)

200V

30.

If the current through a resistor is 2A and the voltage across it is 12V, what is the resistance

a)

12Ω

b)

6Ω

c)

24Ω

d)

0.167Ω

31.

What effect do electrons flowing through a resistor have on the resistor.

a)

make it glow

b)

reduce it's resistance

c)

increase it's resistance

d)

heat it up

32.

in which circuit is the lamp brightest

a)

1

b)

2

c)

3

d)

All the same

33.

As the length of a wire increases, the resistance of the wire will

a)

increase

b)

decrease

c)

stay the same

34.

As the diameter of a wire increases, the resistance of the wire will

a)

increase

b)

decrease

c)

stay the same

35.

Which resistor has the biggest voltage across it?

a)

2 Ω

b)

3 Ω

c)

4 Ω

d)

all have the same

36.

What is the resistance of a lightbulb that experiences 9 Volts and 3 amps of current?

a)

1/3 ohms

b)

3 ohms

c)

27 ohms

d)

9 ohms

37.

What is the voltage of a circuit with 4 ohms of resistance and 3 amps of current?

a)

12 V

b)

21 V

c)

4/3 V

d)

3/4 V

38.

What is the formula for ohms law?

a)

1+2=3

b)

R X E = I

c)

V =I x R

d)

E= MC squared

39.
a)

not moving

b)

positive constant velocity

c)

negative constant velocity

d)

changing velocity

40.
a)

not moving

b)

positive constant velocity

c)

negative constant velocity

d)

changing velocity

41.
a)

not moving

b)

velocity is increasing

c)

velocity is decreasing

d)

constant velocity

42.

What does the slope of a position-time graph represent?

a)

Distance

b)

Displacement

c)

Velocity

d)

Acceleration

43.

Which dot diagram shown is consistent with the position-time data?

a)
b)
c)
44.

During which stage is the object moving toward its starting point?

a)

A

b)

B

c)

C

d)

D

e)

E

45.

Which of the following lines (1-6) represent motion diagram B?

a)

Graph Line 1

b)

Graph Line 2

c)

Graph Line 3

d)

Graph Line 5

e)

Graph Line 6

46.
Which runner had a head start?
a)

A

b)

B

c)

C

47.

How does her speed at 3 minutes compare with her speed at 7 minutes?

a)

She is driving faster at 3 minutes.

b)

She is driving faster at 7 minutes

c)

She is driving forward at 3 minutes and back at 7.

d)

She is moving up at 3 minutes and down at 7 minutes

48.

A position-time graph of an athlete winning the 100-m run is shown. What was the instantaneous position of the athlete at 2.5 s?

a)

15 m

b)

20 m

c)

25 m

d)

30 m

49.

From the following position-time graph of two brothers running a 100-m run, analyze at what time do both brothers have the same position. The smaller brother started the race from the 20-m mark.

a)

2 s

b)

4 s

c)

6 s

d)

8 s

50.
Total distance divided by total time is
a)

average speed

b)

constant speed

c)

instantaneous speed

d)

acceleration

51.

What is the speed of a cheetah that travels 112.0 m in 4.0 s?

a)

0.0357 m/s

b)

30 m/s

c)

0.036 m/s

d)

28.0 m/s

52.

Turning a corner on a motorcycle is always an example of ____.

a)

Speed

b)

Velocity

c)

A change in speed

d)

A change in velocity

53.

An old lady rolls down a hill at 3 meters/second. The hill is 36 meters long. How many seconds does it take the old lady to reach the bottom of the hill?

a)

39 seconds

b)

12 seconds

c)

15 seconds

d)

33 seconds

54.
Displacement is distance combined with
a)

direction

b)

speed

c)

velocity

d)

magnitude

55.
Calculate these 3 car's speeds, then rank them in order of fastest to slowest, with 3 being the fastest car and 1 the slowest car.
Car A- distance: 4 meters, time: 2 sec
Car B- distance: 2 meters, time: 2 sec
Car C- distance: 8 meters, time: 2 sec
a)

Car A= 1 Car B= 2 Car C = 3

b)

Car A = 2 Car B= 1 Car C= 3

c)

Car A= 3 Car B= 1 Car C = 2

d)

Car A = 3 Car B= 2 Car C= 1

56.

Explain the motion from 0-1s

a)

Stationary

b)

Constant speed

c)

Constant acceleration

d)

Non-constant acceleration

57.

Explain the motion from 8s onwards. The blue line runs along the x-axis. Hint: What is the velocity from 8s onwards.

a)

Stationary

b)

Constant speed

c)

Constant acceleration

d)

Constant deceleration

58.
Speed equals distance divided by
a)

time

b)

velocity

c)

size

d)

motion

59.
Shona cycles at an average speed of 8km/h. How far has she traveled if she cycles for 4 hours?
a)

55km

b)

32km

c)

43km

d)

32miles

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