Physics!! A 4-A current is maintained in a simple circuit with a total resistance of 2 ohms...
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Physics!! A 4-A current is maintained in a simple circuit with a total resistance of 2 ohms...

[From: ] [author: ] [Date: 12-04-09] [Hit: ]
......
How much energy is delivered in 45 seconds?

a) 1140 J
b) 96 J
c) 360 J
d) 720 J
e) 240 J

-
t = 45 s
Energy = Power x time = P*t
Power= P = I²R = (4)²(2) = ____
Energy = 45P = _______ ANS
1
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