Transferring Electrical Energy Worksheet Page 8
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46(ii)
What is the name and circuit symbol for the instrument used to measure electric
current?
Name: ..............................................................................................................
Symbol:
(2)
(b)
When an electric current flows through a wire, the wire will get hot. Two of the following
make use of this heating effect. Which two?
1. .................................................................................................................................
2. .................................................................................................................................
(2)
(c)
A 0.2 kW light bulb is switched on for 3 hours.
Use the following equation to calculate, in kWh, how many units of electrical energy are
transferred to the bulb during the 3 hours.
units = power × time
....................................................................................................................................
Number of units = kWh .............................
(2)
(Total 7 marks)
Page 8 of 46
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