A resistive load consumes 500 W when connected to a 100 V DC supply.
(a) Calculate its current. (b) Calculate its energy in kWh if it is powered an
average of 8 hours in a day. (c) If it is connected to an AC power supply, find
the magnitude (peak and rms) of the AC supply that feeds the same power and
energy to this load. (d) Find the portion of monthly utility bill if every kWh is
charged at 12 cents (assume that the load is in use all 30 days).