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An electrical power line, having a total resistance of 2Ω, delivers 1 kW at 220 V. The efficiency of the transmission line is approximately

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+2 votes
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in Physics by (48.3k points)

An electrical power line, having a total resistance of 2Ω, delivers 1 kW at 220 V. The efficiency of the transmission line is approximately

(1) 85% 

(2) 96% 

(3) 72% 

(4) 91%

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1 Answer

+5 votes
by (48.7k points)

Correct answer is (2) 96%

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