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

-- 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