A battery with EMF of $$\(V\)$$ and an internal resistance of $$\(r_{\text {int }}\)$$ is connected to a heating loop with resistance $$\(R\)$$. What is the correct expression for the rate at which energy is converted to heat by the heating loop?
A.
\(V^{2} / R\)
B.
\(V^{2} r_{\text {int }} /\left(r_{\text {int }}+R\right)^{2}\)
C.
\(V /\left(r_{\text {int }}+R\right)\)
D.
\(V^{2} R^{2} /\left(r_{\text {int }}+R\right)^{2}\)
E.
none of the above
Exam No：AP Physics C(EM) Practice Test Year：2024 Question No：11
Answer:
E
Knowledge points:
3.2 Electric Circuits: Current, Resistance, and Power
Solution:
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