Question

A coil of copper wire is connected to a galvanometer. What would happen if a bar magnet is (a)Pushed into the coil with its north pole entering first? (b)Pulled out of the bar magnet (c) Held stationary inside the coil pls answer me this question

Answer 1

Answer:

(a)Pushed into the coil with its north pole entering first?

Answer.A copper wire (conductor) is connected with a Galvanometer. When a bar magnet is pushed into the coil with the North Pole entering first, the side of the coil near the north pole will develop North polarity

(b)Pulled out of the bar magnet

Answer.When the magnet is held stationary in the coil, there will be a magnetic flux in the coil but it will remain constant. Since the magnetic flux does not change, there is no induced current in the coil and the galvanometer shows no deflection

(c) Held stationary inside the coil

Answer.A coil of insulated copper wire is connected to a galvanometer. ... (iii) When a bar magnet is held stationary inside the coil then no current is induced that's why galvanometer will show no deflection.

Explanation:

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