AP Physics 1 Question 366: Answer and Explanation

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Question: 366

4. Question refers to the following figure:

Determine the total power dissipated through the circuit shown above in terms of V, R1, R2, and R3.

  • A.
  • B.
  • C.
  • D.

Correct Answer: D



First, replace all the resistors with an equivalent resistor.

R2 and R3 are in series, so R2 and 3, = R2 + R3.

R1 and R2 and 3 are in parallel, so .

Second, calculate the current coming out of the battery,

Finally, calculate the power,