What happens to the magnetic field when the direction of current in a wire is re

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Question: What happens to the magnetic field when the direction of current in a wire is reversed? (2023)

Options:

Correct Answer: The magnetic field direction reverses

Exam Year: 2023

Solution:

Reversing the direction of current in a wire reverses the direction of the magnetic field around it.

What happens to the magnetic field when the direction of current in a wire is reversed? (2023)

What happens to the magnetic field when the direction of current in a wire is reversed? (2023)

Step 1: Understand that a wire carrying electric current creates a magnetic field around it.
Step 2: Know that the direction of the magnetic field is determined by the direction of the current flowing through the wire.
Step 3: When the current direction is reversed, it means the flow of electric charge changes direction.
Step 4: Since the magnetic field direction depends on the current direction, reversing the current will also reverse the magnetic field direction.
Step 5: Therefore, the magnetic field around the wire will point in the opposite direction when the current is reversed.

Electromagnetism – The relationship between electric current and the magnetic field it generates.
Right-Hand Rule – A mnemonic for determining the direction of the magnetic field relative to the current direction.