The magnetic field inside a long solenoid is given by which of the following exp
Practice Questions
Q1
The magnetic field inside a long solenoid is given by which of the following expressions? (2020)
μ₀nI
μ₀I/n
nI/μ₀
I/μ₀n
Questions & Step-by-Step Solutions
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.
