Power & Energy MCQs

Practice Power & Energy MCQs with four options, answers and explanations for focused Electronics & Telecommunication Engineering revision.

Question 1

Network TheoryPower & Energy

A 12 V ideal source is connected across a 4 ohm resistor. The power dissipated in the resistor is?

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Correct Answer: D. 36 W

Explanation: P = V^2/R = 12^2/4 = 36 W.

Reference: Standard network theory: power & energy

Question 2

Network TheoryPower & Energy

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Correct Answer: B. 2 ohm

Explanation: P = I^2R, so R = 50/25 = 2 ohm.

Reference: Standard network theory: power & energy