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Electricity Quiz

Total questions: 40

Worksheet time: 1hrs 25mins

Name
Class
Date
1.
The wire in a circuit must be made out of what?
a)
Magnetic material
b)
Insulator material
c)
Heated material
d)
Conductive material
2.
Materials that allow electricity to move easily through them are called what?
a)
Insulators 
b)
Conductors 
c)
Magnetic
d)
Electronic
3.
Materials that do NOT allow electricity to easily move through them are called what?
a)
Insulators 
b)
Conductors 
c)
Magnetic 
d)
Electronic 
4.

The same charges repel each other (negative and negative, positive and positive)

a)
True 
b)
False 
5.
What charge does an electron have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
6.

What unit is used to measure current?

a)

Ohms

b)

Omega

c)

Volts

d)

Amps

7.

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

8.

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

9.
What is Resistance?
a)
The flow of electrons
b)
Electric potential difference
c)
A battery
d)
The ability to reduce the flow of electrons
10.
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
11.
How do you calculate voltage?
a)
Current X Resistance
b)
Resistance ÷ Current
c)
Current ÷ Resistance
d)
Measure it with a ruler
12.

What unit is used to measure resistance?

a)

Ohms

b)

Omega

c)

Volts

d)

Amps

13.

What is the current in a circuit with 6 ohms of resistance and a battery containing 24 Volts?

a)

1/4 A

b)

144 A

c)

4 A

d)

0.4 A

14.

I rub a balloon against my head. Afterwards, it sticks to my head. Why is this the case?

a)

Electrons within the balloon build up on its edge.

b)

Protons are rubbed off of the balloon and onto my head, creating opposite charges.

c)

Electrons are rubbed off of my head, and onto the balloon, creating opposite charges.

d)

My head gains atoms from the balloon, causing them to stick together.

15.

What charge is a lightning bolt?

a)

Negative

b)

Positive

c)

Positive and negative, depending on where the bolt is located

d)

Positive in the clouds, negative towards the ground.

16.

Electric charge that is stationary is referred to as....

a)

Electric current

b)

Voltage

c)

Circuit Flow

d)

Static Charge

17.

Within your phone's circuit, certain "devices" are used to control the current of electrons, keeping it at a manageable speed. This helps the phone operate properly. These "devices" are called...

a)

Voltage Meters

b)

Resistors

c)

Conductive Material

d)

Batteries

18.
An example of a conductor is :
a)
a glass paperweight
b)
a plastic cap
c)
a metal screw
d)
a wooden handle
19.
An example of an insulator is:
a)
iron
b)
silver
c)
copper wire
d)
rubber
20.

1. An electrical appliance has a resistance of 25 Ω. When this electrical appliance is connected to a 230 V supply line, the current passing through it will be:

a)

0.92 A

b)

2.9 A

c)

9.2 A

d)

92 A

21.

2. When a 4 Ω resistor is connected across the terminals of a 2 V battery, the amount of charge passing through the resistor per second is:

a)

0.5

b)

1

c)

2

d)

4

22.

What does electricity do?

a)

It powers many things in our house and surroundings.

b)

It powers music instruments only.

c)

It does not have any powers.

d)

It has a big power.

23.
What is a circuit?
a)
A constant flow of electricity 
b)
A path that a current can flow along
24.
What voltage is needed to cause a 2A current flow through a 10Ω resistor?
a)
5V
b)
0.2V
c)
20V
d)
200V
25.
What is a closed path for electrons to flow through?
a)
static electricity
b)
circuit
c)
amperes
26.

What would happen if in a circuit the voltage is increase?

a)

The time would increase

b)

The current would increase

c)

The current would decrease

d)

The current would stay the same

27.
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
28.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
29.
The mathematical relationship among Voltage, Current, and Resistance
a)
Faraday's Law
b)
Tesla's Law
c)
Edison's Law
d)
Ohm's Law
30.

Voltage divided by Resistance

(V / R)

a)

Current

b)

Power

c)

Ohms

d)

Watts

31.
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
32.
What would the circuit resistance be if a 7.5 Amp draw was present with the engine running and the charging system producing 15 Volts
a)
15 Ohms
b)
4 Ohms
c)
0.3333 Ohms
d)
2 Ohms
33.
What word means how much energy is given to / removed from the electrons.
a)
Current
b)
Voltage
c)
Resistance
d)
Power
34.
With the engine running the charging system produces 14.5 Volts what would the current flow be if a resistance of 6 Ohms was present
a)
2.41 Ohms
b)
2.52 Ohms
c)
2.1 Ohms
d)
0.3333 Ohms
35.

What is the pressure or energy that pushes electrons through a circuit?

a)

Current

b)

Voltage

c)

Circuit

d)

Power

36.

If lightning shoots towards the ground, what charge must the ground be?

a)

Positive

b)

Negative

c)

Neutral

37.

Electricity is made up of electrons. What charge are electrons?

a)

Positive

b)

Negative

c)

Neutral

38.

Which material is a good insulator (not a good conductor of electricity)?

a)

A rubber glove

b)

A metal pot

c)

A copper screw

39.

I want to conduct electricity through an object. Which object is best to choose?

a)

A plastic fork

b)

A rubber band

c)

A cloth cushion

d)

A metal screw

40.

A toaster draws a current of 7.5 amperes. If the house's voltage is 120V, what is the resistance of the toaster?

a)

900 Ohms

b)

.06 Ohms

c)

16 Ohms

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