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S2 18 week exam

Total questions: 50

Worksheet time: 1hrs 1mins

Name
Class
Date
1.
As a pair of charges is brought close together, the force between them
a)
Increases
b)
Decreases
c)
Increases only if they are the same sign
d)
Increases only if they are the opposite sign
2.
What method of charging is depicted here?
a)
Induction
b)
Conduction
c)
Reduction
d)
Friction
3.
A charge placed in the presence of an electric field at 1m would feel ____ at 2m.
a)
the same force
b)
double the force
c)
one half the force
d)
one quarter the force
4.
The electrostatic force between two charges located 2 meters apart is 0.10 N.  What will the force be between these charges when they are located 1 meter apart?
a)
0.40 N
b)
0.20 N
c)
0.10 N
d)
0.05 N
5.
When a plastic rod is rubbed with wool, the wool acquires a positive charge because
a)
protons are transferred from the wool to the rod
b)
protons are transferred from the rod to the wool
c)
electrons are transferred from the rod to the wool
d)
electrons are transferred from the wool to the rod
6.

A charge of 9.88*10-6 C exerts a repelling force of 1645 N on a second charge of 2.30*10-6 C. Calculate the distance between the two charges.

a)

0.204 m

b)

1.24*10-4 m

c)

0.011 m

d)

1.38*10-14

7.

A potential difference of 24 V is applied to a 150 resistor. How much current flows through the resistor?

a)

0.15 A

b)

3600 A

c)

6.25 A

d)

0.16 A

8.

This is an example of a _______ circuit

a)

open

b)

series

c)

parallel

d)

square

9.

This is an example of a ______ circuit

a)

Series

b)

Parallel

c)

Open

d)

Dihexihedral

10.

What is not needed in order to create a working circuit?

a)

battery (power source)

b)

lightbulb

c)

current

d)

closed circuit

11.

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

12.

Which resistor will have the greatest potential difference?

p.d. = energy transferred per charge

a)

R1

b)

R2

c)

R3

d)

All have same voltage

13.

What is the total resistance of the circuit in kilo-ohms

a)

18 kΩ

b)

36 kΩ

c)

35 kΩ

d)

0.5 kΩ

14.

Which resistor will receive the most current?

a)

R1

b)

R2

c)

R3

d)

All receive the same current

15.

Which resistor will have the highest potential difference?

p.d. = energy transferred per charge

a)

R1

b)

R2

c)

R3

d)

All have the same potential difference

16.

What is the current that passes through the battery?

a)

18 mA

b)

36 mA

c)

0.25 mA

d)

0.5 mA

17.

What type of circuit is this?

a)

parallel

b)

perpendicular

c)

series

d)

loop

18.

Which resistor will receive the most current?

a)

R1

b)

R2

c)

R3

d)

All receive the same current

19.

Which resistor will have the greatest potential difference?

p.d. = energy transferred per charge

a)

R1

b)

R2

c)

R3

d)

All have same voltage

20.

What can we say about the effective (total) resistance in this circuit?

a)

Less than 1kΩ

b)

Equal to 13kΩ

c)

Between 2kΩ and 10kΩ

21.
What is the difference between a conductor and an insulator?
a)
An insulator allows electricity to flow through it easily and a conductor does not
b)
A conductor allows electricity to flow through it easily and an insulator does not.
c)
An insulator is magnetic and a conductor is not
d)
A conductor is magnetic and an insulator is not
22.
A great conductor of energy is:
a)
wood
b)
plastic
c)
metal
d)
cloth
23.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
24.

What does the "I" mean in Ohm's Law, V = IR?

a)

velocity

b)

resistance

c)

current

d)

voltage

25.
What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?
a)
25 V
b)
10 V
c)
2.5 V
d)
0.4 V
26.

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

27.

How do you calculate total resistance in a parallel circuit?

a)

R1 + R2 + R3

b)

R1 - R2 - R3

c)

1/R1 +1/R2 + 1/R3 = 1/RT

d)

R1 = R2 = R3

28.

How would the equivalent resistance be determined?

a)

1 / Req = (1/5) + (1/8) + (1/3) Ω

b)

120 Ω

c)

1.5189873 Ω

d)

1 / Req = (1/5) * (1/8) * (1/3) Ω

29.
The equivalent resistance in this circuit is 
a)
100 ohms
b)
450 ohms
c)
400 ohms
d)
30 ohms
30.

What unit is used to measure voltage?

a)

Ohms

b)

Omega

c)

Volts

d)

Amps

31.

When light of specific frequencies is shined on a surface, electrons are ejected from the surface. This is the idea behind...

a)

Quantization of Energy

b)

Photoelectric Effect

c)

Compton Effect

d)

deBroglie Waves

e)

Uncertainty Principle

32.

Which subatomic particle is negatively charged?

a)

proton

b)

neutron

c)

electron

d)

quark

33.

What is inside the nucleus of the atom?

a)

electrons and protons

b)

protons and quarks

c)

protons and neutrons

d)

neutrons and electrons

34.

The SI unit of frequency is the __________.

a)

meter

b)

second

c)

hertz

d)

meter per second

35.

Wave -particle duality is supported by...

a)

electrons behaving as particles with ordinary matter

b)

electrons behaving as waves when travelling through space

c)

the photo electric effect

d)

all of the above

36.

Niels Bohr used quantum physics to describe the atomic structure of

a)

hydrogen

b)

zinc

c)

helium

d)

carbon

37.

The equation which links Energy to wavelength is...

a)

E=hfE=hf

b)

E=hfλE=\frac{hf}{\lambda}

c)

E=hcλE=\frac{hc}{\lambda}

d)

c=fλc=f\lambda

38.
Which of the following type of electromagnetic radiation has the most energy
a)
infrared
b)
ultraviolet
c)
microwaves
d)
radiowaves
39.
Put the visible light colors in order from longest wavelength to shortest wavelength
a)
Violet, Indigo, Blue, Green, Orange, Yellow, Red
b)
Red, Yellow, Green, Orange, Violet, Blue, Indigo
c)
Red, Orange, Yellow, Green, Blue, Indigo, Violet
40.
What is the light that you can see called?
a)
observatory
b)
wavelength
c)
visible light
41.
Which has the SHORTEST wavelength and, therefore, the highest frequency/most energy
a)
Radio waves
b)
Ultraviolet Rays
c)
Gamma Rays
d)
X-rays
42.
Emission of light from an atom occurs when an electron
a)
drops from a higher to a lower energy level.
b)
   jumps from a lower to a higher energy level.   
c)
   moves within its atomic orbital.
d)
falls into the nucleus.
43.
For an electron to change from ground state to an excited stated it must...
a)
Absorb energy
b)
Release energy
44.
Why are line emission spectra of elements called "atomic fingerprints"?
a)
They are all the same
b)
They are all unique
c)
They are all similar
d)
They all contain colored light
45.

If an electron moves from n=4 to n=2 it ____

a)

absorbs energy

b)

releases energy

46.

What is an example of mass converting to energy?

a)

a car running on gasoline

b)

a battery powering a flashlight

c)

a person lifting a heavy object

d)

nuclear power plant generating electricity

47.

Who created the equation E = mc2?

a)

Niels Bohr

b)

Albert Einstein

c)

Isaac Newton

d)

Galileo Galilei

48.

Can energy be mass?

a)

No

b)

Yes

49.

Deuterium nucleus has a mass of 1.53 × 10-3 universal mass units less than its components, this mass represents an energy of

a)

1.37 X 10^14 J

b)

1.48 X 10^8 J

c)

2.12 X 10^11 J

d)

3.6 X 10^6

50.

What total mass must be converted into energy to produce a gamma photon with an energy of 1.03 × 10-13 joule?

a)

1.14 X 10^-30 kg

b)

9 X 10^16 kg

c)

1.8 X 10^12 kg

d)

2.34 X 10^15 kg

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