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Describe what happens when a bar magnet is pushed into or pulled out of a solenoid...

Describe what happens when a bar magnet is pushed into or pulled out of a solenoid connected to an ammeter.
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Answer #1

Faraday's Law of Induction states that whenever magnet field and a circuit moves relative to each other, an emf is induced in the circuit and due to this induced emf an induced current flows through the circuit. It is called electromagnetic induction.

When the magnet is pushed into the solenoid the magnetic field increases and the ammeter shows a deflection.

When the magnet is pulled out of the solenoid the magnetic field decreases and the ammeter shows deflection again, it deflects in opposite direction.

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