﻿ Two cities are 150 km apart. electric power is sent from one city to another city through copper wires. The fall of potential per km is 8 V and the average resistance per km is 8 V and the average resistance per km is . The power loss in the wire is, from Physics Work, Energy and Power Class 11 Manipur Board

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Two cities are 150 km apart. electric power is sent from one city to another city through copper wires. The fall of potential per km is 8 V and the average resistance per km is 8 V and the average resistance per km is . The power loss in the wire is,

• 19.2 W

• 19.2 kW

• 19.2 J

• 12.2 kW

B.

19.2 kW

Potential difference (drop) between two cities = 150 x 8 = 1200 V

Average resistance of total wire = 0.5 x 150 =
Power loss, P =
= 19.2 kW

Potential difference (drop) between two cities = 150 x 8 = 1200 V

Average resistance of total wire = 0.5 x 150 =
Power loss, P =
= 19.2 kW

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