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WorksheetsUCEA P5 Electricity in the home
Total questions: 30
Worksheet time: 35mins
Name
Class
Date
1.
Which statement about AC and DC electricity is incorrect?
a)
a) Alternating current pushes electrons backwards and forwards many times a second.
b)
b) Direct current is produced from chemical reactions pushing the electrons.
c)
c) Direct current pushes electrons only in the forwards direction.
d)
d) Alternating current is produced by burning metal ores to make magnetic fields.
2.
Which of the following labels correctly identifies the Fuse on the diagram of a UK electrical plug?
a)
C
b)
D
c)
E
d)
F
3.
Which of the following labels correctly identifies the Live Wire on the diagram of a UK electrical plug?
a)
A
b)
B
c)
C
d)
D
4.
Which of the following labels correctly identifies the Earth Wire on the diagram of a UK electrical plug?
a)
A
b)
B
c)
C
d)
D
5.
Which of the following labels correctly identifies the Neutral Wire on the diagram of a UK electrical plug?
a)
A
b)
B
c)
C
d)
D
6.
The charge of an electron is
a)
positive
b)
negative
c)
electrons have no charge
d)
zero
7.
The SI unit of charge is the
a)
Coulomb
b)
Joule
c)
Watt
d)
Newton
8.
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
9.
What is the frequency of alternating current in the UK National Grid?
a)
60 Hz
b)
50 Hz
c)
230 V
d)
120 V
10.
What is an example of a DIRECT CURRENT source?
a)
battery
b)
solar cell
c)
both of these
d)
neither of these
11.
Two types of circuits are
a)
parallel and magnetic
b)
electromagnetic and series
c)
series and parallel
d)
series and closed
12.
A material in which electrons are able to move easily a
a)
Circuit
b)
Insulator
c)
Resistance
d)
Conductor
13.
A material in which electrons are not able to move easily is an
a)
Circuit
b)
Insulator
c)
Resistance
d)
Conductor
14.
the type of current that is used in mains electricity
a)
appealing current
b)
diverting current
c)
alternating current
d)
direct current
15.
measure of electric current
a)
watt
b)
ohm
c)
volt
d)
amp
16.
measure of resistance
a)
watt
b)
ohm
c)
volt
d)
amp
17.
measure of power
a)
watt
b)
ohm
c)
volt
d)
amp
18.
A 1,000 W toaster connected to British mains would require a fuse rated to
a)
3 A
b)
5 A
c)
13 A
19.
How long would a 1,000 W microwave oven need to run to use 500 J of energy?
a)
0.5 seconds
b)
30 seconds
c)
2 seconds
d)
2 minutes
20.
What current flows through a circuit if it uses 1,000 J of energy while connected to a 9 V battery for 2 minutes?
a)
0.926 A
b)
55.6 A
c)
0.0180 A
d)
1.08 A
21.
Mains electricity in the UK operates at
a)
230 V and 50 Hz
b)
120 V and 50 Hz
c)
230 V and 80 Hz
d)
120 V and 80 Hz
22.
A circuit that has AC current that switches polarity every 0.10 seconds is said to have a frequency of
a)
5 Hz
b)
10 Hz
c)
0.1 Hz
d)
0.2 Hz
23.
A security light with a 5 Ω resistor, a 2 Ω lamp and an LDR which currently has 2 Ω of resistance would have a total resitance of
a)
9 Ω
b)
7 Ω
c)
2 Ω
d)
1 Ω
24.
Through each component in a circuit, the voltage ________ and the current _________.
a)
decreases, stays the same
b)
increases, stays the same
c)
stays the same, increases
d)
stays the same, decreases
25.
Voltage is the
a)
energy transferred per unit charge passed.
b)
power transferred per unit charge passed.
c)
energy transferred per unit current.
d)
power transferred per unit current.
26.
An example of a parallel circuit is
a)
the wiring in a house
b)
a flashlight
c)
a single circular path
27.
A flow of electrons through a conductor is called:
a)
A river
b)
A spark
c)
An electron flow
d)
A current
28.
What is the original energy source for the electrical circuit in the diagram?
a)
insulated wires
b)
music
c)
solar cells
d)
sun
29.
Two lamps, one with a thick filament and one with a thin filament, are connected in parallel to a battery. What explains why the lamp with the thicker filament burns more brightly?
a)
Thin filaments offer less resistance and are better at conducting electrons through a circuit.
b)
The lamp with the thin filament is closer to the battery, which causes the voltage to be higher.
c)
Thick filaments offer less resistance and allow more current to flow through the circuit.
d)
The higher voltage is due to faculty wiring, as teh lamps would normally have the same brightness.
30.
What is the purpose of the transformer drum?
a)
The voltage from the house is decreased
b)
The voltage from the long distance power lines is increased
c)
The voltage from the house is increased for transmission.
d)
The voltage from the long distance power lines is decreased.
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