A resistor of resistance 10 ohm is connected across a 20 V supply. The power consumed by the resistor is

Options

  • A. 20 watt
  • B. 40 watt
  • C. 200 watt
  • D. 400 watt
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

B. 40 watt

Detailed Explanation

Using P = V^2/R, P = 20^2/10 = 40 W.
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