Question

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Answer 1

Answer:

Faraday's Principle of Electromagnetic Induction states that the emf induced in a loop due by a changing magnetic flux is equal to the rate of change of the magnetic flux threading the loop.

The magnetic flux threading a coil of wire can be changed by moving a bar magnet in and out of the coil. By changing the rate at which this is done the flux can be changed at different rates. If the variation of the induced emf is observed while the magnet is moved, it is possible to illustrate Faraday’s principle in a qualitative way.

Answer 2

Answer:

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Explanation:

1. Higher the number of turns, higher the length and thus the amount of current carrying coil material in use is higher and thus higher the magnetic field due to increased amount of current flowing through the solenoid as a result of the increased number of turns.

2.The magnetic curves inside the solenoid are in parallel straight lines, which indicates that the magnetic field is same at all points inside the solenoid. However, the field lines outside the solenoid travels from one pole to the other.

5.We already know that an electric current has the ability to produce a magnetic field in a plane perpendicular to the direction of current flow. The electromagnet uses this principle. An electromagnet can be defined as a magnet which functions on electricity.

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