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WorksheetsGCSE Electricity Quiz
Total questions: 22
Worksheet time: 22mins
An appliance works at 3A. What is the best option for a fuse in the circuit connected to this appliance and why?
5A, so that the fuse does not blow when the appliance is used normally
7A, since it allows a current much larger than needed for the appliance to flow in the circuit
2A, so that the fuse blows when the appliance is used normally
3A, since the fuse blows at the same value of current that the appliance needs
When a metal wire is heated externally, its resistance will...?
Stay constant
Oscillate
Increase
Decrease
What is the equation linking charge, current and time?
current = time x charge
charge = current x time
charge = current / time
current = 1/2(time) x charge
Charging takes 110 minutes and causes a total charge of 180 000 C to pass through the battery. What is the average charging current in the battery?
1636 A
163.6 V
27 A
27 V
The current in a motor is 2.1 A and the potential difference across it is 12V. The motor takes 1.5 seconds to lift a mass. What is the energy transferred to the motor as it lifts the mass?
85 J
3.8 J
38 J
8.5 J
The current in a motor is 2.1 A and the potential difference across it is 12V. The motor takes 1.5 seconds to lift a mass. What is the energy transferred to the motor as it lifts the mass?
85 J
3.8 J
38 J
8.5 J
What is the difference between a.c. and d.c?
d.c. is always a bigger current than a.c.
a.c. is always a bigger current than d.c.
a.c. remans constant in direction of current flow whereas d.c. oscillates in direction of current flow
a.c. oscillates in direction of current flow whereas d.c. remains constant in direction of current flow
There is no difference
The torch uses a light-emitting diode (LED) to provide light. When the LED is on, it shows that...
the current is alternating
the torch is switched off
there is a current in the circuit
there is a fault in the circuit
Calculate the voltage across the fixed resistor.
0.3 V
3 V
4.8 V
12 V
A direct current of 3.0A flows through a circuit consisting of a battery and a 6.0 resistor. What is the potential difference across the resistor?
0.5 V
2 V
9 V
18V
Some solar cells generate a current of 2.3A. Calculate the charge transferred by the solar cells in 15 seconds.
34.5 C
1.53 C
0.15 C
345 C
Calculate the current in ammeter A2
24 amps
6 amps
0.16 amps
12 amps
Calculate the time taken for the motor to lift the mass.
8.5s
9s
8.55s
9.1s
Name the different components of the following IV graphs
1-wires, 2-filament lamp, 3-different resistors, 4-diode
1- diode, 2-different resistors, 3-wires, 4-filament lamp
1-diode, 2-different resistors, 3-filament lamp, 4-wires
1-wires, 2-different resistors, 3-filament lamp, 4-diode
A toaster has a power of 1800 W while operating at a voltage of 230 V. Show that the current in the toaster is about 8 A.
1800 / 230 = 7.826...
1800 / 230 = 7.827...
230 / 1800 = 8
230 / 1800 = 7.826...
This table gives some information about a nuclear power plant and a wind turbine. Using the data from the table, calculate the number of wind turbines needed to produce the same power as a nuclear power station.
100.0
10.00
10 000
1000.00
This table gives some information about a nuclear power plant and a wind turbine. Using the data from the table, calculate how many wind turbines would need to be built every 60 years to provide the same power as a nuclear power plant.
Three hundred thousand
30 000
30.00
300.0
Three thousand
A student creates this circuit. The current running through Lamp 1 is 2A and the voltmeter reading is 4V. Calculate the resistance of Lamp 1.
2Ω
2R
2V
4 Ohms
5N
Explain the meaning of the term "earthed".
A wire that has a direct connection to the earth
A wire that is directly covered with earth
A wire made of earth
An insulated wire that is buried in the earth
Which component matches this symbol?
LDR
Fuse
Cell
Variable resistor
Which component matches this symbol?
fuse
LDR
thermistor
LED
Which of these 4 circuits can be used to measure how the current varies with a change in voltage across a bulb?
