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Kisachek [45]
3 years ago
12

Why is soft iron used for the core of an electromagnet?

Physics
2 answers:
aliina [53]3 years ago
5 0

Answer:

Because of the high permeability and high saturation level of holding magnetism.

Explanation:

Soft iron always used in the core of an electromagnet because of the following reason which are discussed below.

  • Permeability: These magnets are highly permeable means they can gain magnetism when current is passes through them and instantly loose magnetism after removal of current.
  • High saturation level: The property of these soft magnets are they have the high value of saturation means they can hold high level of magnetism without easily saturating.
Tanzania [10]3 years ago
3 0
The soft iron<span> inside the coil makes the magnetic field stronger because it becomes a magnet itself when the current is flowing. </span>Soft iron<span> is </span>used<span> because it loses its magne</span>
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Answer:

a. by moving the book without acceleration and keeping the height of the book constant

Explanation:

FOR CONSTANT KINETIC ENERGY:

The kinetic energy of a body depends upon its speed according to its formula:

ΔK.E = (1/2)mΔv²

So, for Δv = 0 m/s

ΔK.E = 0 J

So, for keeping kinetic energy constant, the books must be moved at constant speed without acceleration.

FOR CONSTANT POTENTIAL ENERGY:

The potential energy of a body depends upon its height according to its formula:

ΔP.E = mgΔh

So, for Δh = 0 m/s

ΔP.E = 0 J

So, for keeping potential energy constant, the books must be moved at constant height.

So, the correct option is:

<u>a. by moving the book without acceleration and keeping the height of the book constant</u>

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kumpel [21]
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