Question

A refrigerator 400w works for 2 hours Calculate the bill in june if 1 unit cost is 3

Answer 1

Answer:

p = 400w = 0.4 kw

t = 2 hours

so, power consumption in 1 day = p × t

0.4 × 2 = 0.8 kWh

so, power consumption in 30 days = 30 × 0.8

24 kWh

now , cost of 1 unit = 3 rs.

so cost of 24 unit = 24 × 3 = 72 rs.