Solve.
-If the voltage, $\mathrm { V }$, in an electric circuit is held constant, the current, I, is inversely proportional to the resistance, R. If the current is 420 milliamperes when the resistance is $2 \mathrm { ohms }$, find the current when the resistance is $12 \mathrm { ohms }$.
A) 2514 milliamperes
B) 70 milliamperes
C) 2520 milliamperes
D) 140 milliamperes

Question

Quizplus · Accepted Answer

Since the current is inversely proportional to the resistance, we can use the formula $I_1R_1 = I_2R_2$. Substituting the given values, $420 \times 2 = I_2 \times 12$. Solving for $I_2$ gives $I_2 = 70$ milliamperes.

Solve -If the Voltage V\mathrm { V }V , in an Electric Circuit Is Held Constant, the Current

Solve
-If the Voltage $\mathrm { V }$ , in an Electric Circuit Is Held Constant, the Current