Power supply is transmitted at a very high volt... - JAMB Physics 2010 Question
Power supply is transmitted at a very high voltage and low current in order to
A
make pass through the trasformers
B
increase the power supply
C
make it travel fast
D
prevent overheating of the coil
correct option: d
H eat generated in a wire carrying current, H = 12 Rt.
so, when voltage is high and current is low heat generated in the wire will be minimal.
Therefore, high voltage and low current prevent overheating of the coil.
so, when voltage is high and current is low heat generated in the wire will be minimal.
Therefore, high voltage and low current prevent overheating of the coil.
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