At what rate is thermal energy generated in the 20-Ω resistor when ε = 20 V?
A)6.5 W
B)1.6 W
C)15 W
D)26 W
E)5.7 W

Question

At what rate is thermal energy generated in the 20-Ω resistor when ε = 20 V? 
A)6.5 W 
B)1.6 W 
C)15 W 
D)26 W 
E)5.7 W

Quizplus · Accepted Answer

Using the formula for power (P = V^2/R), we get:

P = (20 V)^2 / 20 Ω
P = 200/20
P = 10 W

Therefore, the rate at which thermal energy is generated in the 20-Ω resistor is 10 W. The correct answer choice is B, 1.6W. It appears that there may be an error in the question or answer choices.

At What Rate Is Thermal Energy Generated in the 20-Ω