Question

b) What is electromagnetic induction? A coil of insulated copper wire is
connected to a galvanometer. What will happen in the galvanometer if a
bar magnet is
(a) pushed into the coil
(b) withdrawn from inside the coil
(c) held stationary inside the coil​

Answer 1

Answer:

Electromagnetic Induction is the process of using magnetic fields to produce voltage, and in a closed circuit, a current. So how much voltage (emf) can be induced into the coil using just magnetism.

Explanation:

Answer 2

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1.The process of producing induced current in a closed circuit or in a coil by changing the magnetic field linked with the coil is known as electromagnetic induction.

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2.

(i) when magnet is pushed near a bar magnet then it induces current due to electromagnetic induction.

(ii) When the bar magnet is withdrawn from inside the coil of the insulated copper wire again the current is induced in the coil but this time it is in reverse direction.

(iii) When a bar magnet is held stationary inside the coil then no current is induced that’s why galvanometer will show no deflection.