A generating plant supplies through transmission lines whose total resistance is

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

A generating plant supplies

500\,\text{kW}

through transmission lines whose total resistance is

1\,\Omega

. To keep the line loss below

1\%

of the transmitted power, the minimum rms transmission voltage should be (a)

5\,\text{kV}

(b)

10\,\text{kV}

(c)

7\,\text{kV}

(d)

4.1\,\text{kV}