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GCSE Mains Electricity

Total questions: 28

Worksheet time: 19mins

Name
Class
Date
1.
What is the voltage of mains electricity in the UK National Grid?
a)
120 V
b)
220 V
c)
230 V
d)
None of these
2.
What is the frequency of alternating current in the UK National Grid?
a)
60 Hz
b)
50 Hz
c)
230 V
d)
120 V
3.
the type of current that is used in mains electricity
a)
appealing current
b)
diverting current
c)
alternating current
d)
direct current
4.
measure of power
a)
watt
b)
ohm
c)
volt
d)
amp
5.
A circuit that is connected to Earth is said to be _____.
a)
series
b)
parallel
c)
grounded
d)
discharged
6.
What is the power of a 20V bulb with 5A through it?
a)
100W
b)
100V
c)
6.3W
d)
6.3A
7.
What is the current through a 11V bulb with a power of 99W?
a)
9W
b)
9A
c)
60V
d)
60A
8.
A _________ is a plug or cartridge containing a strip of metal that melts when more than a specified amount of current passes through it.
a)
fuse
b)
breaker
c)
circuit
d)
panel
9.

Which wire is connected to a fuse in a UK plug?

a)

Live

b)

Neutral

c)

Earth

d)

Positive

10.

What material are the pins made from in a UK plug?

a)

Aluminium

b)

Copper

c)

Iron

d)

Brass

11.

Tranformers are used in the National Grid to...

a)

increase or decrease the current

b)

increases or decrease the potential difference

c)

convert the energy to electrical energy

d)

speed up the electrons in the circuit

12.

Alternating current is used because...

a)

it can be easily changed and therefore is suitable for long distance travel

b)

it remains constant and is therefore suitable for long distance travel

c)

it uses less energy than direct current and therefore less overall energy is used

d)

it doesn't degrade the wires and therefore they last longer

13.

Which one is a Fuse?

a)
b)
c)
d)
e)
14.

Which one is a Live Wire?

a)

Brown. Provides the alternating potential difference

b)

Blue. Completes the circuit and carries away current

c)

Green and Yellow. Only carries current when there is a fault

15.

Which one is a Neutral Wire?

a)

Brown. Provides the alternating potential difference

b)

Blue. Completes the circuit and carries away current

c)

Green and Yellow. Only carries current when there is a fault

16.

Which one is an Earth Wire?

a)

Brown. Provides the alternating potential difference

b)

Blue. Completes the circuit and carries away current

c)

Green and Yellow. Only carries current when there is a fault

17.

Which does the national grid use?

a)

High Potential Difference

b)

High Current

c)

Low Potential Difference

d)

Low Current

18.

What is the Equation for Charge Flow?

a)

Charge Flow = Current x Time

b)

Charge Flow = Current / Time

c)

Charge Flow = Time / Current

19.

What is another Equation for Power?

a)

Power = Potential Difference x Current

b)

Power = Potential Difference / Current

c)

Power = Current / Potential Difference

20.

What are the Equations for Energy Transferred?

a)

Energy Transferred = Power x Time

b)

Energy Transferred = Power / Time

c)

Energy Transferred = Charge Flow x Potential Difference

d)

Energy Transferred = Charge Flow / Potential Difference

21.

This is the symbol for a...

a)

Light Dependent Resistor

b)

Light Emitting Diode

c)

Thermistor

d)

Cell

22.
The SI unit of charge is the
a)
Coulomb
b)
Joule
c)
Watt
d)
Newton
23.
How many volts are in a circuit with a battery that has a resistance of 10 Ohms and a current of 2 Amps? 
a)
.5 Volts
b)
5 Volts
c)
20 Volts
24.
If the battery produced 12.6 Volts and what would be the current flow be for a 6 Ohm resistor
a)
2.1 Amps
b)
2.4 Amps
c)
1.71 Amps
d)
15 Amps
25.
Sally is creating a model to show what happens when electricity is used.  She decided to show the motor spinning below as her model. How could she best explain what is happening?
a)
Electric energy is transformed into energy of motion.
b)
Heat energy is transformed into energy of motion.
c)
Heat energy is transformed into electric energy.
d)
Electric energy is transformed into light energy.
26.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
27.
Lightning is a form of static electricity. What can you infer about what happens when lightning strikes the ground?
a)
Protons and neutrons are transferred from the clouds to the ground
b)
The ground becomes negatively charged
c)
. Electrons are transferred from the clouds to the ground
d)
An electric current is established between the clouds and the ground
28.
Which of the following is unsafe?
a)
Using a surge protector when you have a lot of devices to plug into one outlet.
b)
Replacing a blown fuse with a fuse that has the same current
c)
Resetting a breaker box after a circuit breaker trips
d)
Using multiple extension cords on one outlet

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