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JEE Main20253 Apr 2025Evening ShiftPhysicsCurrent ElectricityActual

A motor operating on 100 V draws a current of 1 A. If the efficiency of the motor is 91.6 % , then the loss of power in units of cal / s is

Options

  1. A4
  2. B8.4
  3. C2
  4. D6.2

Correct answer

C. 2

Step-by-step solution

aligned & P_ input =V i=100 ~W & = P_ out P_ input =0.916 aligned aligned & P_ out =91.6 ~W & Loss =100-91.6=8.4 ~J / s =2 cal / s aligned

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