Question

A heater element has a voltage rating of 230 V. If this heater element converts 2.5kWh in a span of 1.5hrs, determine the current flowing in the heater element during this period

Answer 1

Power dissipated by the heater is

$\dfrac{2.5kWh}{1.5h}=1.667kW$

$Power=Voltage \times{Current}\\ Current=\dfrac{Power}{Voltage}=\dfrac{1.667\times1000}{230}=7.2A$

Current is therefore 7.2A