Power in watts = Energy in joules ÷ Time in seconds
Time = 7 hour * 60 min/hr * 60 min/s = 2.52*10^4 s
Power in watts = 2.5* 10^5 /(2.52*10^4) = 9.92
Power = V * I
V = I * R, I = V / R
P = V^2 / R
9.92 = 9^2 / R
R = 8.1648 ohm
Chapter 20, Problem 007 A resistor is connected across the terminals of a 9.0-V battery, which...
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