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

Practice Questions

Q1
What happens to the magnetic field when the direction of current in a wire is reversed? (2023)
  1. The magnetic field remains unchanged
  2. The magnetic field direction reverses
  3. The magnetic field strength increases
  4. The magnetic field strength decreases

Questions & Step-by-Step Solutions

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.
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