An electric heater of resistance 8 ohm draws 15 A current from the mains. What is the rate at which heat is developed in the heater?

Asked In Exam: BPSC TRE 3.0

Options

  • A. 220 watt
  • B. 120 watt
  • C. 210 watt
  • D. More than one of the above
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

E. None of the above

Detailed Explanation

The rate of heat production is electrical power P = I^2R = 15^2 x 8 = 1800 W. Therefore none of the given values is correct.

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BPSC TRE 4 General Science practice set 1

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