$$\text { Figure } 3

Name: \[\text { Figure } 3 < 1\] -If a 10 $\mathrm { k } \Omega$ resistor dissipates 0.5 W in Figure 3-1 , then the supply voltage equals
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Question

$$\text { Figure } 3 < 1$$
-If a 10 $\mathrm { k } \Omega$ resistor dissipates  0.5 W  in Figure  3-1 , then the supply voltage equals

Quizplus · Accepted Answer

Using Ohm's Law, we can find the voltage across the resistor:

$$P = IV = I^2 R = \frac{V^2}{R}$$

Rearranging this equation, we can solve for the voltage (V):

$$V = \sqrt{PR} = \sqrt{(0.5 	ext{ W})(10 	ext{ k}\Omega)} = 70.7 	ext{ V}$$

Therefore, the answer is (C) 70.7 V.

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$\text { Figure } 3 < 1$ -If a 10 $\mathrm { k } \Omega$