WorksheetsDomestic Electricity
Total questions: 7
Worksheet time: 5mins
What is the equation for power?
P=I × V
P = IV2
P = VI
What fuse should be used for an appliance with a 2kW power rating?
(Remember: Mains voltage is 230V)
3A
5A
13A
What 3 wires can be found in a UK plug?
Live, Natural and Earth
Positive, Neutral and Negative
Positive, Natural and Earth
Live, Neutral and Earth
Why is a ring main wired in parallel? (Tick 2 answers)
To stop short circuits
To reduce the chance of electrocution
To allow each socket to be turned on and off independently
To reduce electricity costs
To supply all sockets with the same voltage
In a ring main the live wire carries current to the appliance at a (a) voltage
Which of these statements are true regarding MCBs? (Tick 2)
They are faster than fuses
They are resettable
They are slower than fuses
They are more dangerous than fuses
Enter the two missing words.
An RCCB protects the ______ by detecting a difference in _______ between the live and neutral wire of the appliance.
(a)
