If the potential difference across a resistor is doubled:
A)only the current is doubled
B)only the current is halved
C)only the resistance is doubled
D)only the resistance is halved
E)both the current and resistance are doubled

Question

Quizplus · Accepted Answer

According to Ohm's Law, V = IR, where V is the potential difference (voltage), I is the current, and R is the resistance. If we double the potential difference across a resistor, and assuming the resistance stays the same, then doubling the voltage would just result in doubling the current. Therefore, the answer is A) only the current is doubled.

If the Potential Difference Across a Resistor Is Doubled