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
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.