Question

Difference between solenoid and electromagnet ,factors responsible for strength of solenoid and electron​

Answer 1

Explanation:

Factors Affecting the Strength of the Magnetic Field of an Electromagnet: Factors that affect the strength of electromagnets are the nature of the core material, strength of the current passing through the core, the number of turns of wire on the core and the shape and size of the core

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Answer 2

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∆ Difference between solenoid and electromagnet ,factors responsible for strength of solenoid and electron

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• A solenoid is a coil of wire wound on a cylinder, that has a length that is large compared with its radius. A solenoid is a long, thin loop of wire, often wrapped around a metallic core, which produces a magnetic field when an electric current is passed through it.

• An electromagnet is a magnet that runs on electricity. Unlike a permanent magnet, the strength of an electromagnet can easily be changed by changing the amount of electric current that flows through it. The poles of an electromagnet can even be reversed by reversing the flow of electricity.

Factors that affect the strength of electromagnets :

1. the nature of the core material,
2. the nature of the core material, strength of the current passing through the core,
3. the nature of the core material, strength of the current passing through the core,the number of turns of wire on the core and the shape and size of the core.

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• How can we increase or decrease the strength of an electromagnet?

The strength of the magnetic field of an electromagnet increases when:

(a) The current is increased

(b) The number of turns is increased

(c) The turns of wire are pushed closer together so that the length of the solenoid becomes shorter

(d) A soft iron core is placed into the solenoid The use of alloys such as aluminium-nickel- cobalt (alnico) can produce stronger magnetic fields.

The polarity at the ends of the solenoid is changed by changing the direction of the current, as shown in Figure. The direction of the magnetic field at any point can be shown by a plotting compass.

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