Question

calculate the cost of running a geyser of 2 kilowatt power rating for 2 hours given that electric company charges rupees 5.50 per unit​

Answer 1

Answer:

7.92 * 10^7  rs

Explanation:

P = 2kW = 2000 W

T = 2hours (2*60*60) = 7200 secs

Energy = P * T

2000 W * 7200 secs

14400000

1.44 * 10^7 J

cost will be = 5.50 * 1.44 *10^7

7.92 * 10^7 rupees