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Practice MCAT Question - Q37 - Answer!

If the potential of a dc source is 5.0 volts, and R2 = 10 Ohms, what must be the potential difference across R2?

A.  0.50 V
B.  2.0 V
C.  5.0 V
D.  50 V

The correct answer is (C). For a parallel circuit, the potential difference is the same across all branches of the circuit.

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