GK QUESTION#2948
Two positive ohmic resistances R1 and R2 are connected in parallel across the same nonzero potential difference. If R1 is less than R2, what can be inferred about the branch currents?
Show Answer
Answer
C. Current through R1 is greater than through R2.
Show Explanation
Explanation
Both parallel branches have the same potential difference. With positive ohmic resistances, I = V/R gives I1/I2 = R2/R1. Hence the smaller resistance R1 carries the larger current for a nonzero applied voltage.