Question

15. Write the expression for magnetic field inside a solenoid and explain the terms.
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Answer 1

Answer:

B = μ0nI Where μ0 = Permeability of free space n = number of turns per unit length of solenoid I = current through solenoid.

Answer 2

Magnetic field inside solenoid :

• This formula can be easily proved with Ampere-Circuital Law. The general expression comes as :

$\boxed{ \bf \: B = \mu_{0}(N \times i) }$

The various terms used here are :

• $\mu_{0}$ is the permeability of free space with value of 4π × 10^(-7) .

• N refers to number of turns per unit length (hence can also be written as n/L)

• 'i' refers to current through the solenoid.

Hope It Helps.