Question

An electric heater takes 4 ampere when operated in a 250 supply. What is the cost of running the electricity consumes of 10 naira per kWh when the water heater is used of 5hours

Answer 1

First, calculate the power consumption of the electric heater.

Power (P) = Current (I) x Voltage (V)
P = 4 A x 250 V
P = 1000 Watts

Next, calculate the total energy consumption in kWh for 5 hours of use.
Energy (E) = Power (P) x Time (T)
E = 1000 W x 5 hours
E = 5000 Wh or 5 kWh

Finally, calculate the cost of running the electric heater for 5 hours.
Cost = Energy (E) x Cost per kWh
Cost = 5 kWh x 10 Naira/kWh
Cost = 50 Naira

Therefore, the cost of running the electric heater for 5 hours is 50 Naira.