What happens to the magnetic field inside a solenoid if the current is reversed?

Practice Questions

Q1
What happens to the magnetic field inside a solenoid if the current is reversed?
  1. Reverses direction
  2. Increases
  3. Decreases
  4. Remains the same

Questions & Step-by-Step Solutions

What happens to the magnetic field inside a solenoid if the current is reversed?
  • Step 1: Understand that a solenoid is a coil of wire that creates a magnetic field when an electric current flows through it.
  • Step 2: Know that the direction of the magnetic field inside the solenoid is determined by the direction of the current flowing through the wire.
  • Step 3: When the current is reversed, it means that the flow of electricity 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 inside the solenoid will point in the opposite direction when the current is reversed.
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