What is the magnetic field inside a long solenoid when it carries a current? (20

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Question: What is the magnetic field inside a long solenoid when it carries a current? (2023)

Options:

Correct Answer: Uniform and directed along the axis

Exam Year: 2023

Solution:

The magnetic field inside a long solenoid is uniform and directed along the axis of the solenoid when it carries a current.

What is the magnetic field inside a long solenoid when it carries a current? (2023)

What is the magnetic field inside a long solenoid when it carries a current? (2023)

Step 1: Understand what a solenoid is. A solenoid is a long coil of wire that can create a magnetic field when an electric current passes through it.
Step 2: Know that when current flows through the solenoid, it generates a magnetic field inside it.
Step 3: Recognize that the magnetic field inside a long solenoid is uniform, meaning it has the same strength and direction at every point inside the solenoid.
Step 4: Identify the direction of the magnetic field. It runs along the length (axis) of the solenoid, from one end to the other.
Step 5: Remember that the strength of the magnetic field inside the solenoid depends on the amount of current flowing through it and the number of turns of wire per unit length.

No concepts available.