The power P (watts) in an electric circuit is related to the circuit's resistance R (ohms) and the current I (amperes) by the equation P = R I². If the power of a circuit is a constant 40 watts and the resistance R is decreasing at the constant rate of 4 ohms /s, at what rate is the current I changing at the instant the current is 2 amperes? A) The current is decreasing at the rate of amperes / s. B) The current is increasing at the rate of amperes / s. C) The current is decreasing at the rate of amperes / s. D) The current is increasing at the rate of amperes / s. E) The current is decreasing at the rate of amperes / s.

Question

Quizplus · Accepted Answer

The Answer of The power P (watts) in an electric circuit is related to the circuit's resistance R (ohms) and the current I (amperes) by the equation P = R I². If the power of a circuit is a constant 40 watts and the resistance R is decreasing at the constant rate of 4 ohms /s, at what rate is the current I changing at the instant the current is 2 amperes? A) The current is decreasing at the rate of amperes / s. B) The current is increasing at the rate of amperes / s. C) The current is decreasing at the rate of amperes / s. D) The current is increasing at the rate of amperes / s. E) The current is decreasing at the rate of amperes / s.

The Power P (Watts) in an Electric Circuit Is Related