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What is the direction of the magnetic field due to a current flowing in a circul

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Question: What is the direction of the magnetic field due to a current flowing in a circular loop when viewed from above? (2023)

Options:

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

Correct Answer: Out of the plane

Exam Year: 2023

Solution: 

Using the right-hand rule, if the current flows in a counterclockwise direction when viewed from above, the magnetic field direction is out of the plane.

What is the direction of the magnetic field due to a current flowing in a circul

Practice Questions

Q1
What is the direction of the magnetic field due to a current flowing in a circular loop when viewed from above? (2023)
  1. Out of the plane
  2. Into the plane
  3. Clockwise
  4. Counterclockwise

Questions & Step-by-Step Solutions

What is the direction of the magnetic field due to a current flowing in a circular loop when viewed from above? (2023)
  • Step 1: Imagine you are looking down at a circular loop of wire from above.
  • Step 2: Determine the direction of the current flowing in the loop. For this example, let's say the current flows in a counterclockwise direction.
  • Step 3: Use your right hand to apply the right-hand rule. Point your thumb in the direction of the current flow (counterclockwise).
  • Step 4: Curl your fingers around the loop. Your fingers will wrap in the direction of the current.
  • Step 5: Notice that your thumb points upwards, which indicates the direction of the magnetic field.
  • Step 6: Conclude that if the current flows counterclockwise when viewed from above, the magnetic field direction is out of the plane (towards you).
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