Font size
WorksheetsGCSE Electricity
Total questions: 30
Worksheet time: 20mins
Which wire is connected to a fuse in a UK plug?
Live
Neutral
Earth
Positive
Tranformers are used in the National Grid to...
increase or decrease the current
increases or decrease the potential difference
convert the energy to electrical energy
speed up the electrons in the circuit
Alternating current is used because...
it can be easily changed and therefore is suitable for long distance travel
it remains constant and is therefore suitable for long distance travel
it uses less energy than direct current and therefore less overall energy is used
it doesn't degrade the wires and therefore they last longer
Which one is a Fuse?
Which one is a Live Wire?
Brown. Provides the alternating potential difference
Blue. Completes the circuit and carries away current
Green and Yellow. Only carries current when there is a fault
Which one is a Neutral Wire?
Brown. Provides the alternating potential difference
Blue. Completes the circuit and carries away current
Green and Yellow. Only carries current when there is a fault
Which one is an Earth Wire?
Brown. Provides the alternating potential difference
Blue. Completes the circuit and carries away current
Green and Yellow. Only carries current when there is a fault
Which does the national grid use?
High Potential Difference
High Current
Low Potential Difference
Low Current
What is the Equation for Charge Flow?
Charge Flow = Current x Time
Charge Flow = Current / Time
Charge Flow = Time / Current
What is another Equation for Power?
Power = Potential Difference x Current
Power = Potential Difference / Current
Power = Current / Potential Difference
What are the Equations for Energy Transferred?
Energy Transferred = Power x Time
Energy Transferred = Power / Time
Energy Transferred = Charge Flow x Potential Difference
Energy Transferred = Charge Flow / Potential Difference
This is the symbol for a...
Light Dependent Resistor
Light Emitting Diode
Thermistor
Cell
This is the symbol for a...
Light Dependent Resistor
Light Emitting Diode
Thermistor
Cell
LED lamps are much more efficient than filament lamps.
What does this statement mean?
LED lamps have a similar power output to filament lamps.
LED lamps waste a smaller proportion of the input energy than filament lamps.
LED lamps have a higher power input than filament lamps.
LED lamps waste a larger proportion of the input energy than filament lamps.
The diagram shows a temperature sensing circuit used to control a heating system in a house.
The current in the circuit is 3.5 mA when the potential difference across the thermistor is 4.2 V
Calculate the resistance of the thermistor in Ohms (Answer to 2 sig fig, no units needed)
(a)
A student set up the electrical circuit shown in the figure.
The ammeter displays a reading of 0.10 A.
Calculate the potential difference (in Volts) across the 45 Ω resistor. (2 sig fig, no units needed).
(a)
As the length of a wire increases, the resistance of the wire will
increase
decrease
stay the same
The total resistance of the circuit is
9 ohms
Less than 9 Ohms
More than 9 Ohms
We cannot tell
