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Electricity

Total questions: 60

Worksheet time: 55mins

Name
Class
Date
1.

Cell is a device which-

a)

Converts chemical energy into electrical energy.

b)

Electrical energy into light energy

c)

Electrical energy into magnetic energy

d)

None of these

2.

Which of the following is the symbol of an electric bulb?

a)
b)
c)
d)
3.

What is an electric circuit?

a)

A closed path between the cell and bulb in which electricity flows.

b)

The flow of electrons through a conductor.

c)

A device the interrupts the flow of electrons.

4.

What is the direction of current in an electric circuit?

a)

Positive to negative

b)

Negative to positive

c)

None of these

5.

Why do electricians wear gloves made of rubber?

a)

It is soft.

b)

It is waterproof.

c)

It is an insulator.

d)

It is inexpensive.

6.

Which type of energy is stored in a battery?

a)

chemical energy

b)

kinetic energy

c)

light energy

7.

If one part of the circuit is broken what will happen?

a)

The electricity will continue to flow

b)

The electricity will stop flowing

c)

The electricity will move faster

d)

The electricity will move slower

8.
If a material does not allow charges to move through it easily, what is it called?
a)
An electrical insulator
b)
An electrical conductor
c)
A resistor
d)
A capacitor
9.
What charge does an electron have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
10.
What charge does a proton have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
11.
If an object has the same number of positive and negative charges, its electrical charge is...
a)
positive
b)
negative
c)
neutral or no charge
d)
opposite
12.
The measure of potential energy stored in a battery is called _________.
a)
potentiometer
b)
capacity
c)
voltage
d)
resistance
13.

A Bulb glows only in-

a)

A closed circuit

b)

An open circuit

c)

In both circuits

d)

Open circuit if bulb is not fused

14.

Why is a switch used in a circuit?

a)

To open or close a circuit

b)

To save energy

c)

To prevent electric shocks

d)

To make the bulb glow easily

15.

What are the two places on the battery to which the wires can be attached called?

a)

Switches

b)

Filaments

c)

Insulators

d)

Terminals

16.
What is a circuit?
a)
an outlet or switch
b)
a path which an electric current flows
c)
a poor conductor
17.

Why do electricians wear gloves made of rubber?

a)

It is soft.

b)

It is waterproof.

c)

It is an insulator.

d)

It is inexpensive.

18.

Why is a switch used in a circuit?

a)

To open or close a circuit

b)

To save energy

c)

To prevent electric shocks

d)

To make the bulb glow easily

19.

What are the two places on the battery to which the wires can be attached called?

a)

Switches

b)

Filaments

c)

Insulators

d)

Terminals

20.

Which type of energy is stored in a battery?

a)

chemical energy

b)

kinetic energy

c)

light energy

21.

A Bulb glows only in-

a)

A closed circuit

b)

An open circuit

c)

In both circuits

d)

Open circuit if bulb is not fused

22.

In which of the following circuits will all of the remaining light bulbs go out if bulb 3 burns out?

a)
b)
c)
d)
23.

Which of the following would be a good conductor of electricity?

a)

plastic

b)

rubber

c)

cotton

d)

iron

24.

Which of the following is an example of a resistor?

a)

battery

b)

light bulb

c)

wire

d)

switch

25.

Which of the following is a series circuit?

a)
b)
c)
d)
26.

Which of the following is a simple parallel circuit? (ONLY a parallel circuit - no lights are in series)

a)
b)
c)
d)
27.

Which circuit will not light the bulb?

a)
b)
c)
d)
28.

The purpose of a switch is to?

a)

Start and stop electric current

b)

Make a motor move

c)

Turn on a light

d)

Heat up wires

29.

The purpose of wires are to?

a)

Turn a switch on

b)

Turn off a light

c)

Carry electric current to different parts of the circuit

d)

Make a motor move

30.

The MAIN purpose of a battery is to

a)

Make things hot

b)

Store energy

c)

Move energy from one place to another

d)

Provide motion

31.

The plus sign on a battery shows which terminal?

a)

Positive

b)

Negative

32.

The minus sign on a battery shows which terminal?

a)

Positive

b)

Negative

33.

If one part of the circuit is broken what will happen?

a)

The electricity will continue to flow

b)

The electricity will stop flowing

c)

The electricity will move faster

d)

The electricity will move slower

34.

The purpose of a switch is to?

a)

Start and stop electric current

b)

Make a motor move

c)

Turn on a light

d)

Heat up wires

35.

The purpose of wires are to?

a)

Turn a switch on

b)

Turn off a light

c)

Carry electric current to different parts of the circuit

d)

Make a motor move

36.

The MAIN purpose of a battery is to

a)

Make things hot

b)

Store energy

c)

Move energy from one place to another

d)

Provide motion

37.

The plus sign on a battery shows which terminal?

a)

Positive

b)

Negative

38.

The minus sign on a battery shows which terminal?

a)

Positive

b)

Negative

39.

If one part of the circuit is broken what will happen?

a)

The electricity will continue to flow

b)

The electricity will stop flowing

c)

The electricity will move faster

d)

The electricity will move slower

40.
Metals such as copper and aluminum are good ______________. 
a)
insulators
b)
conductors
c)
circuits
d)
charges
41.
All electrical devices contain electric ________________.
a)
acid
b)
gears
c)
circuits
d)
motors
42.
The unit for the rate of current is the ______________.
a)
ampere
b)
volt
c)
ohm
d)
joule
43.
Batteries and power plants are examples of ______________. 
a)
energy sources
b)
energy conduction
c)
energy transformation
44.
current is measured in....
a)
volts
b)
amps
c)
watts
d)
mph
45.
Current is...
a)
moving protons
b)
moving electrons
c)
measured in volts
d)
measured in ohms
46.
Why are the wires covered in plastic?
a)
keeps the wire from scratching stuff
b)
makes a nice coil
c)
it is a conductor
d)
keeps you from getting shocked
47.
What material is a good conductor?
a)
copper
b)
wood
c)
rubber
d)
plastic
48.
What material is an insulator?
a)
coper
b)
silver
c)
gold
d)
plastic
49.
this circuit is .....?
a)
open
b)
parallel
c)
closed
d)
The cutest little circuit evah!
50.

An instrument used to measure the amount of electrical current intensity in a circuit.

a)

Voltmeter

b)

Ammeter

c)

Micrometer

d)

Ohmmeter

51.

The correct formula for finding the value of voltage is

a)

V = IR

b)

V = I/R

c)

I = V/R

d)

R = V/I

52.

This is a measure of the opposition to current flow in an electrical circuit.

a)

ampere

b)

resistance

c)

voltage

d)

wattage

53.

What is "I" stands for in the Ohm's Law triangle?

a)

electric current

b)

magnetic force

c)

resistance

d)

voltage

54.

This states that the current flowing in a circuit is directly proportional to the applied potential difference and inversely proportional to the resistance in the circuit.

a)

Kepler's Law

b)

Law of gravity

c)

Ohm's Law

d)

Thermodynamics Law

55.
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
56.

Which of the following is the correct formula for Calculating Current?

a)

I = VRI\ =\ \frac{V}{R}  

b)

R = V x IR\ =\ V\ x\ I  

c)

I=RVI=\frac{R}{V}  

d)

V= I x RV=\ I\ x\ R  

57.

Which of the following would be a measurement of Voltage?

a)

21 Watts

b)

9 V

c)

2.0 Amps

d)

7 Ω

58.

Which of the following is Ohm's Law?

a)

Current is proportional to Voltage and inversely proportional to resistance.

b)

Current is proportional to Resistance and inversely proportional to Voltage

c)

Resistance, Current and Voltage are proportional to each other.

59.

A 10-V battery generates a current through a 5 Ω resistor. How much current does the battery generate?

a)

2 A

b)

50 A

c)

2.5A

d)

0.5

60.
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

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