What happens to the magnetic field when the current in a solenoid is reversed? (

Practice Questions

Q1
What happens to the magnetic field when the current in a solenoid is reversed? (2023)
  1. It remains the same
  2. It disappears
  3. It reverses direction
  4. It doubles

Questions & Step-by-Step Solutions

What happens to the magnetic field when the current in a solenoid is reversed? (2023)
  • Step 1: Understand what a solenoid is. A solenoid is a coil of wire that creates a magnetic field when an electric current passes through it.
  • Step 2: Know that the direction of the magnetic field is determined by the direction of the current flowing through the solenoid.
  • Step 3: When the current flows in one direction, the magnetic field has a specific direction (for example, from the north to the south pole).
  • Step 4: If you reverse the current, it means the flow of electricity changes direction.
  • Step 5: When the current is reversed, the magnetic field also changes direction, meaning it will now point in the opposite way.
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