A heater with an effective resistance of 4.8 ohms is connected to 240.0 volts if it operated approximately 25% of the time and electricity costs $0.10 per kWh w
Physics
Asmabaker30
Question
A heater with an effective resistance of 4.8 ohms is connected to 240.0 volts if it operated approximately 25% of the time and electricity costs $0.10 per kWh what will be the electrical bill for30 days
1 Answer

1. User Answers AL2006
 Power used when the heater is running =
V²/R = (240)²/4.8= 12,000 watts. (12 KW)
(A gigantic heater ... suitable for maybe a theater, not for a home.)
 Energy consumed in one day:
(12 KW) x (24 hours) x (25%) = 72 KwH per day
 Energy consumed in 30 days: (72 KwH/day) x (30 days) =
2,160 KwH in 30 days
 Cost = ($0.1 / KwH) x (2,160 KwH) = $216.00 in 30 days