2 If an electric heater requires 273 A at 110 v determine a

2. If an electric heater requires 27.3 A at 110 v, determine a) The power it dissipates as heat or other losses b) The energy dissipated by the heater in 24-h period in Joules. c) The cost of the energy if the power company charges at the rate of8.1cents/kWh.

Solution

voltage =110 volts.

current=27.3 amps

a) power=voltage*current=110*27.3=3003 watts.

b) energy= power*time=3003*24=72072 joules.

c) cost of energy=72072/8.1=8898 cents.