What is the magnetic field inside a long solenoid when it carries a current? (20
Practice Questions
Q1
What is the magnetic field inside a long solenoid when it carries a current? (2023)
Zero
Uniform and directed along the axis
Varies with distance
Depends on the temperature
Questions & Step-by-Step Solutions
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.
