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MHT CET202620 April 2026Morning ShiftPhysicsAlternating CurrentActual

When an inductance ' L ' and resistor ' R ' are connected in series to 25 V, 50 Hz supply, a current of 0.5 A flows in the circuit. The current lags behind in phase from applied voltage by ( 3 ) radian. The value of R is ( 60^ = 1 2 )

Options

  1. A20 ,
  2. B25 ,
  3. C40 ,
  4. D50 ,

Correct answer

B. 25 ,

Step-by-step solution

The impedance of the LR series circuit is given by: Z = V I Substituting the given values: Z = 25 0.5 = 50 , The power factor of the circuit is related to the resistance and impedance by: = R Z Given that the current lags the voltage by = 3 radian ( 60^ ): R = Z R = 50 60^ R = 50 1 2 = 25 , Answer: 25 ,

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