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MCAT Question A Day - 8/22/13 - Answer!

If all the components of an electric circuit are connected in series, the physical quantity that is constant at all points in the circuit must be the

A.  voltage.
B.  current.
C.  resistance.
D.  power.


The correct answer is (B). A series circuit has only one path for current so it must be the same at all points in the circuit.