WorksheetsGCSE Electricity
Total questions: 20
Worksheet time: 11mins
What is the best definition for potential difference?
the potential energy per electron.
the potential energy per unit of charge.
the kinetic energy per unit of charge.
the energy carried by an electron.
A lamp is connected to a 24 V power supply. The current through the lamp is 1.5 A.
Calculate the power of the lamp. (Answer to 2 Sig Fig with unit symbol).
(a)
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.
What quantity does the ammeter measure? (One correct word only needed)
(a)
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)
The diagram shows the circuit used to obtain the data needed to plot the current-potential difference graph for a filament lamp.
Why is component M included in the circuit?
To keep the current constant.
To keep the potential difference constant.
To vary the current.
To vary the bulbs resistance.
An example of an insulator of electricity is.....
Rubber
Silver
Iron
Copper
1. Which switch or switches must be closed to make the lamps light?
Only switch 1
Only switch 1
Switches 1 and 2
Switches 1 , 2 and 3
If lamp 2 is unscrewed from its holder, what will happen to lamp1?
It will stay lit
It will go out
It will get dimmer
It will dissapear
As the length of a wire increases, the resistance of the wire will
increase
decrease
stay the same
Which resistor has the biggest voltage across it?
2 Ω
3 Ω
4 Ω
all have the same
The total resistance of the circuit is
9 ohms
Less than 9 Ohms
More than 9 Ohms
We cannot tell
The current flowing through the 2 ohms Resistor is 2 Amps, what is the current flowing through the 4 Ohms
(a)
The current flowing through the 2 ohms Resistor is 2 Amps, what is the voltage of the 3 ohms Resistor?
(a)
