Question

A cable 4 km long and of total resistance 1 ohm carries electric current from
a generator producing 100kW at 10,000 Volts. The current in amperes in the
cable is
A. 10
B. 10,000
C. 1000
D. 100.000

ANSWER IS D
CAN YOU WRITE DOWN THE SOLUTION

Answer 1

The current in amperes in the cable is 10A.

Explanation:

$P=100kW$

$=100*1000W$ and

$V=10000V$

$P=VI$

so, current  in the cable $I=\frac{P}{V}$

$=\frac{100*1000}{10000}$

$=10A$.

Answer 2

Answer:

The answer is 10 A

Explanation:

P = VI

P/V =I

100×1000/10000 = I

10A = I