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99 Percentile Qs Bank for JEE MainPhysicsAlternating Current

Find the current through the primary coil ((P) ) of the transformer shown below.

Options

  1. A(0.08 ~A )
  2. B(0.04 ~A )
  3. C(0.02 ~A )
  4. D(0.01 ~A )

Correct answer

C. (0.02 ~A )

Step-by-step solution

The given situation is shown in the figure For the given transformer, ( aligned & V_p=230 ~V & V_S=23 ~V & R_S=115 aligned ) Currrent in secondary coil, (I_S= V_S R_S = 23 115 =0.2 ~A ) We know that, in a transformer ( aligned V_S V_P & = I_P I_S & I_P= V_S I_S V_P = 23 0.2 230 =0.02 ~A aligned )

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