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MCAT Question A Day - 2/23/14

A 20 Ohm and a 40 Ohm resistor are connected in series with a voltage source as shown below.

If the current through the 20 Ohm resistor is 2.0 A, what is the voltage drop across the 40 Ohm resistor?

A.  40 V
B.  80 V
C.  120 V