question_answer

In the figure given below, a coil B is connected to low voltage bulb L and placed parallel to another coil A as shown

Explain the following observations.

(i) Bulb lights up and

(ii) Bulb gets dimmer if the coil B is moved upwards.

Answer:

           

(i) Bulb lights up due to the induced current setup in coil B because of alternating current in coil A

(ii) Bulb gets dimmer when the coil B is moved upwards because the flux linked with coil B decreases and induced current also decreases because