Solve the problem.
-If the voltage, V, in an electric circuit is held constant, the current, I, is inversely proportional to the resistance, R. If the current is 300 milliamperes when the resistance is 2 ohms, find the current when the resistance is 12 ohms.
A) 1,800 milliamperes
B) 1,794 milliamperes
C) 100 milliamperes
D) 50 milliamperes

Question

Quizplus · Accepted Answer

Since the current is inversely proportional to the resistance, we have I = k/R for some constant k. Given I = 300 mA when R = 2 ohms, we find k = 300 * 2 = 600. When R = 12 ohms, I = 600 / 12 = 50 mA.

Solve the Problem. -If the Voltage, V, in an Electric Circuit Is Held