Transferring Electrical Energy Worksheet Page 12
ADVERTISEMENT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46(i)
How many Units (kWh) of electricity were used between the two meter readings?
..........................................................................................................................
..........................................................................................................................
Number of Units = ............................................
(1)
(ii)
One Unit costs 6p.
Use the following equation to calculate the cost of the electrical energy used between
the two meter readings. Show clearly how you work out your answer.
total cost = number of Units × cost per Unit
..........................................................................................................................
..........................................................................................................................
Cost = ..........................................................................
(2)
(d)
A 3000 watt electric cooker is switched on for 2 hours.
Use the following equation to calculate the number of Units of energy transferred by the
cooker. Show clearly how you work out your answer.
energy transferred
=
power
×
time
(kilowatt-hour, kWh)
(kilowatt, kW)
(hour, h)
.....................................................................................................................................
.....................................................................................................................................
Energy transferred = ..................................................kWh
(2)
(Total 9 marks)
Page 12 of 46
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Education