Solve the problem.A simple electrical circuit consists of a resistor connected between the terminals of a battery. The voltage V (in volts) is dropping as the battery wears out. At the same time, the resistance R (in ohms) is increasing as the resistor heats up. The power P (in watts) dissipated by the circuit is given by P =
. Use the equation
=
+
src="https://sciemce.com/media/4/ppg__tttt0610191239__f1q35g5.jpg" style="vertical-align: -17.0px;" /> to find how much the power is changing at the instant when R = 4 ohms, V = 3 volts,
and
A. -2.19 watts
B. -2.31 watts
C. 2.19 watts
D. 2.31 watts
Answer: B
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