an electrical appliance takes 10A when operated on a 220V supply. find the cost of operating the appliance for 10hours at 5kobo per kwhr

Answer 1

First, we need to calculate the power consumed by the appliance in kilowatts (kW).

Power (P) = Voltage (V) x Current (I)
P = 220V x 10A
P = 2200W = 2.2 kW

Next, we calculate the energy consumed by the appliance in kilowatt-hours (kWh) over the 10-hour period.

Energy = Power x Time
Energy = 2.2 kW x 10 hours
Energy = 22 kWh

Finally, we calculate the cost of operating the appliance for 10 hours at 5 kobo per kWh.

Cost = Energy x Cost per kWh
Cost = 22 kWh x 0.05 kobo
Cost = 1.1 kobo

Therefore, the cost of operating the appliance for 10 hours at 5 kobo per kWh is 1.1 kobo.