The magnetic field inside a long solenoid is given by which of the following exp

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Question: The magnetic field inside a long solenoid is given by which of the following expressions? (2020)

Options:

Correct Answer: μ₀nI

Exam Year: 2020

Solution:

The magnetic field (B) inside a long solenoid is given by B = μ₀nI, where n is the number of turns per unit length and I is the current.

The magnetic field inside a long solenoid is given by which of the following expressions? (2020)

The magnetic field inside a long solenoid is given by which of the following expressions? (2020)

Step 1: Understand what a solenoid is. A solenoid is a long coil of wire that creates a magnetic field when an electric current passes through it.
Step 2: Identify the key components of the formula for the magnetic field inside a solenoid. The formula is B = μ₀nI.
Step 3: Break down the formula: B represents the magnetic field strength, μ₀ is the permeability of free space (a constant), n is the number of turns of wire per unit length of the solenoid, and I is the current flowing through the wire.
Step 4: Remember that 'n' (number of turns per unit length) is calculated by taking the total number of turns of wire and dividing it by the length of the solenoid.
Step 5: Realize that the magnetic field inside a long solenoid is uniform and directed along the axis of the solenoid.

No concepts available.