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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 wires. The falI of potential per km is 8 volt 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
19.2 kW
Total voltage drop V = `150 xx 8 = 1200` V
Total resistance of wire R =` 0.5 xx 150 = 75 Omega `
Power loss in the wire,
`(V^(2))/(R) = ((1200)^(2))/(75)`
= 19200 W = 19.2 kW
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KUMAR PRAKASHAN-CURRENT ELECTRICITY-SECTION [D] MULTIPLE CHOICE QUESTIONS (MCQs) (MCQs FROM .DARPAN. BASED ON TEXTBOOK)
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