When the voltage across a steady resistance is doubled,the current
A)is half.
B)remains the same.
C)is doubled.
D)is quadrupled.

Question

Quizplus · Accepted Answer

According to Ohm's law, current (I) is directly proportional to voltage (V) and inversely proportional to resistance (R). Therefore, if voltage (V) is doubled and resistance (R) remains constant, current (I) must also double. Hence, the correct choice is C.

When the Voltage Across a Steady Resistance Is Doubled,the Current