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Two cities are 150 km apart. Electric po...

Two cities are `150 km` apart. Electric power is sent from one city to another city through copper wire. The fall of km is `0.5 Omega`. The power less in the wire is

A

`19.2 kW`

B

`19.2 J`

C

`12.2 kW`

D

`19.2 W`

Text Solution

Verified by Experts

The correct Answer is:
A
Loss of power per km =`(V^2)/R = (8^2)/(0.5) = 128W`
For `150km = 150 xx 128 = 19200W`
`=19.2 kW`.
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