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KCET2017PhysicsWave Optics

A coil of inductive reactance ( 1 3 ) and resistance ( 1 ) is connected to a ( 200 ~V , 50 ~Hz ) ac. supply. The time lag between maximum voltage and current is

Options

  1. A( 1 300 s )
  2. B( 1 600 s )
  3. C( 1 500 ~s )
  4. D( 1 200 s )

Correct answer

B. ( 1 600 s )

Step-by-step solution

Given, inductive reactance, ( L= 1 3 ); resistance, ( R=1 ); ac voltage, ( V=200 ~V , 50 ~Hz ); Now, ( = L R ) [ array l = 1 3 =30^ or = 6 t= 6 t= 6 1 array ] Since ( =2 f=2 50 ) ( t= 6 1 2 50 = 1 600 s ) Therefore, time lag between maximum voltage and current is ( 1 / 600 ~s ).

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