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If a current-carrying wire is bent into a circular loop, what is the direction o

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Question: If a current-carrying wire is bent into a circular loop, what is the direction of the magnetic field at the center of the loop according to the Biot-Savart Law?

Options:

  1. Out of the plane of the loop
  2. Into the plane of the loop
  3. Clockwise
  4. Counterclockwise

Correct Answer: Out of the plane of the loop

Solution: 

According to the right-hand rule applied to the Biot-Savart Law, the magnetic field at the center of a circular loop of current is directed out of the plane of the loop.

If a current-carrying wire is bent into a circular loop, what is the direction o

Practice Questions

Q1
If a current-carrying wire is bent into a circular loop, what is the direction of the magnetic field at the center of the loop according to the Biot-Savart Law?
  1. Out of the plane of the loop
  2. Into the plane of the loop
  3. Clockwise
  4. Counterclockwise

Questions & Step-by-Step Solutions

If a current-carrying wire is bent into a circular loop, what is the direction of the magnetic field at the center of the loop according to the Biot-Savart Law?
  • Step 1: Understand that a current-carrying wire creates a magnetic field around it.
  • Step 2: Recognize that when the wire is bent into a circular loop, the current flows in a circular path.
  • Step 3: Use the right-hand rule: Point your thumb in the direction of the current flow (around the loop).
  • Step 4: Curl your fingers around the loop; they will point in the direction of the magnetic field lines.
  • Step 5: At the center of the loop, your fingers will point out of the plane of the loop.
  • Step 6: Conclude that the magnetic field at the center of the loop is directed out of the plane of the loop.
  • Biot-Savart Law – The Biot-Savart Law describes how electric currents produce magnetic fields, particularly how to calculate the magnetic field generated by a current-carrying wire.
  • Right-Hand Rule – A mnemonic for determining the direction of the magnetic field produced by a current-carrying conductor, where the thumb points in the direction of current and fingers curl in the direction of the magnetic field.
  • Magnetic Field Direction – Understanding the orientation of the magnetic field in relation to the geometry of the current-carrying wire.
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