Homework Solution

TP 2-14

Given:

        P = 100 W = 0.100 kW
        t = 2 days = 48 hrs
        cost/kWh = 12 cents

Find:

        cost

Science:

       energy used = P Dt

Solve:

       cost = (12 cents/kWh)(0.100 kW)(48 hrs) = 58 cents