a) i) The length of the conductor
ii) The thickness/diameter/area of cross section of the conductor
iii) Type of metal conductor
b) It has a thin short piece of wire which overheats and melts if a current greater than its rating flows through it hence breaking the circuit that it connects
c) i) I = $\frac{P}{V}$ = $\frac{2500W}{240V}$ = 10.41 A
Fuse is not suitable because it exceeds the fuse rating.
ii) No of kWh = 2.5 x 3 = 7.5 kWh
Cost = 7.5 x 0.8 = Kshs 6.0
johnmulu answered the question on February 20, 2017 at 05:49
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