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Practice MCAT Question - Q32 - Answer!

What is the current in the circuit shown below?

A.  0.5 A
B.  2.0 A
C.  6.0 A
D.  12 A

The correct answer is (B). The three resistors are connected in series so Rtot = Sum(R) = 6 Ohms. From Ohm’s law, Vtot / RtotItot = 12V / 6 Ohms = 2A.

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