Question

What is the difference between an electromagnet and permagmet ? How is an electromagnet designed ? State any two factor on which the strength of an electromagnet depends ​

Answer 1

Explanation:

Difference Between Permanent Magnet and Electromagnet

Difference between Permanent Magnet and Electromagnet is magnetic field and strength. In Electromagnet, the magnetic field is created by a wire-wound coil but the magnetic field of Permanent (Bar) Magnet cannot be changed. The strength of Permanent Magnet depends on the material used for its creation, on the other hand, the strength of Electromagnet varies according to the flow of electric current into it. Three types of Permanent (Bar) Magnets are Ceramic Magnet, Flexible magnets, Neodymium iron boron magnet, and Samarium cobalt magnet. Each has its own applications and types. Let’s see the more differences between the Permanent Magnet and Electromagnet.

Permanent Magnet

These types of magnets can retain their magnetism and magnetic properties for a longer time. Strongly magnetized hard materials make up permanent magnets. A perfect example of a permanent magnet is the Bar Magnet. This magnet widely explains the behavior of magnets. Actually, we call permanent magnets as Bar Magnets also.

Answer 2

Explanation:

Permagnet :-

A permagnet is an object made from a material that is magnetised and creates it's own persistent magnetic field . An everyday example is a refrigerator magnet used to hold ores on a refrigerator .

Electromagnet :-

An electromagnet is a type of magnet whose magnetic field is produced by the flow of electric current . the magnetic field disappears when the current passes .

Design of electromagnetic :

An electromagnet is made from a coil of wire wrapped on a soft iron core which acts as a magnet when an electric current passes through it , but stops being a magnet when the current stops

Following factors affecting the strength of electromagnet. .

(1) the no. of winding in the electromagnet.

(2) The amount of current supplied.

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