The two ends of a 3.0-W resistor are connected to a 9.0-V battery.What is the total power delivered by the battery to the circuit?
A)3.0 W
B)27 W
C)0.33 W
D)0.11 W

Question

Quizplus · Accepted Answer

The total power delivered by the battery to the circuit can be calculated using the formula P = V^2/R, where P is power, V is voltage, and R is resistance.

In this case, V = 9.0 V and R = 3.0 Ω.

Plugging these values into the formula, we get:

P = (9.0 V)^2 / 3.0 Ω = 81.0 / 3.0 = 27.0 W

Therefore, the total power delivered by the battery to the circuit is 27.0 W, which corresponds to choice B).

The Two Ends of a 3