If three 2.2 kΩ resistors are connected in series across a 50 V source, PT equals .
A)52.08 mW
B)379 mW
C)402 mW
D)104.2 mW

Name: If three 2.2 kΩ resistors are connected in series across a 50 V source, PT equals . A)52.08 mW B)379 mW C)402 mW D)104.2 mW
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Quizplus · Accepted Answer

When resistors are in series, the total resistance is the sum of individual resistances. Here, total resistance = 3 * 2.2 kΩ = 6.6 kΩ. Using the formula P = V^2 / R, where V = 50 V and R = 6.6 kΩ, PT = (50^2) / 6600 = 379 mW.

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