Question

What are the four ways to make an electromagnet stronger?

Answer 1

Hint: An electromagnet is a magnet in which a magnetic field is generated by winding wire over a metal piece which is based on the principle of electromagnetic induction so its strength is dependent on the factors that increase the magnetic field and also the nature of material and factors on which current depends are important.
Formula used:
The electromagnetic induction wrote as
\[B = {\mu _0} \times n \times i\]
Where $B$ is the magnetic field,
\[{\mu _0}\] is the permeability,
\[n\] is the no. of turns of the coil per unit length
and \[I\] is the current.

Complete step-by-step solution:
An electromagnet is a kind of magnet that acts as a permanent magnet but its magnetic field strength can vary, it is made up of metal pieces wrapped by metallic wire around it by which a current is a pass, this current induces a magnetic field in the metal piece. You have to see also the other factors on which the circulating current depends and the type of metal piece you are using.
So, the stronger electromagnet means that more current and stronger magnetic field
If $B$ is the magnetic field, \[{\mu _0}\] is the permeability, \[n\] is the no. of turns of the coil per unit length
and \[I\] is the current.
By the induction law,
\[B = {\mu _0} \times n \times i\]
Here we can see that we can make the electromagnet stronger
> By increasing the no. of turns per unit length n we can increase the current which increases the magnetic field.
> By increasing the current flowing in the wire.
> By decreasing the resistance of the wire.
> By using a ferromagnetic core so that it increases the magnetic field.
Therefore, these are the ways to make the electromagnet stronger.

Note:
> An electromagnet is a type of magnet. it attains magnetic characteristics upon the flow of electric current.
> It works on the law of electromagnetic induction.
> The circulating current determines the strength of the magnetic field.