Two circular coils P and Q are kept close to each other, of which coil P carries a current. If coil P is moved towards Q, will some current be induced in coil Q?

CBSE Class 10 CBSE Class 10 Science
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  1. Two circular coils P and Q are kept close to each other, of which coil P carries a current. If
    coil P is moved towards Q, will some current be induced in coil Q? Give reason for your answer and name the phenomenon involved.
  2. What happens if coil P is moved away from Q?
  3. State any two methods of inducing current in a coil.

Answer:

  1. When coil P is moved towards Q, current will be induced in coil Q. This is because on moving P the magnetic field associated with Q increases and so a current is induced. The phenomenon is electromagnetic induction.
  2. If P is moved away from Q, the field associated with Q will decrease and a current will be induced but in the opposite direction.
  3. Current can be induced in a coil by (a) moving a magnet towards or away from the coil (b) moving a coil towards or away from a magnet © rotating a coil within a magnetic field.