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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 potential per km is 8V and the average resistance per km is `0.5 Omega`. The power loss in the wire is

A

19.2 W

B

19.2 kW

C

19.2 J

D

12.2 kW

Text Solution

Verified by Experts

The correct Answer is:
B
Total voltage drop `= 150 xx 8 =V`
total resistance of wire `R = 0.5 xx 150`
Power loss `= (V^(2))/(R)=((150xx8)^(2))/(0.5 xx150)=19.2KW`.
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RESONANCE ENGLISH-DAILY PRACTICE PROBLEM-DPP No.42
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