what is the solution to these problems? If electrical energy costs 12 cents, or
ID: 1677913 • Letter: W
Question
what is the solution to these problems? If electrical energy costs 12 cents, or $0.12, perkilowatt-hour, then what would the following events cost?(a) Burn a 100 Wlight bulb for 24 h straight.
$
(b) Operate an electric oven for 7.0 hif it carries a current of 20.0 A at 220 V.
$
what is the solution to these problems? If electrical energy costs 12 cents, or $0.12, perkilowatt-hour, then what would the following events cost?
(a) Burn a 100 Wlight bulb for 24 h straight.
$
(b) Operate an electric oven for 7.0 hif it carries a current of 20.0 A at 220 V.
$
(a) Burn a 100 Wlight bulb for 24 h straight.
$
(b) Operate an electric oven for 7.0 hif it carries a current of 20.0 A at 220 V.
$
Explanation / Answer
(a) Energy consumedE = 100 W x 24 h = 2400 Wh = 2.4 kWh
Total cost = E x rate ofcost = 2.4 kWh x $0.12/kWh =$ 0.29 = 29 cents
(b) For an oven wit I = 20 A at220 V for 7 h Energy consumed, E =V.I.t = 220 V x 20 A x 7 h =30800 Wh = 30.8 kWh Total cost, = E xRate of cost = 30.8 kWh x 12 cent/kWh = 369.6 cents = $3.70
(b) For an oven wit I = 20 A at220 V for 7 h Energy consumed, E =V.I.t = 220 V x 20 A x 7 h =30800 Wh = 30.8 kWh Total cost, = E xRate of cost = 30.8 kWh x 12 cent/kWh = 369.6 cents = $3.70
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.