Answer: $4.8
A 1000W bulb switched on for 1 hr will consume 1KWh (or 1 unit of electricity)
A 200W bulb switched on for 1 hr will consume 200/1000 units of electricity.
A 200W bulb switched on for 8hrs will consume 8 × 200 ÷ 1000 = 1.6units
There are 30days in a April,
A 200W bulb switched on for 8hrs/day for 30 days will consume
1.6 × 30 = 48 units of electricity or 48KWh of electricity.
Cost of operating bulb if AEP's current rate is $0.10/kWh
48KWh × $0.10/kWh
= $4.8 monthly.