Question

What is solenoid? Don't spam.

Answer 1

Explanation:

solenoid (, ) is a type of electromagnet, the purpose of which is to generate a controlled magnetic field through a coil wound into a tightly packed helix. The coil can be arranged to produce a uniform magnetic field in a volume of space when an electric current is passed through it.

B=\mu_{0} \frac{N I}{l}

B = solenoid magnetic flux density

\mu_{0} = magnetic constant

{N} = number of turns

I = current

{l} = length of the solenoid