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What is the direction of the magnetic field inside a long straight current-carry

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Question: What is the direction of the magnetic field inside a long straight current-carrying conductor?

Options:

  1. Outward from the conductor
  2. Inward towards the conductor
  3. Circular around the conductor
  4. No magnetic field present

Correct Answer: Circular around the conductor

Solution: 

According to the right-hand rule, the magnetic field lines around a straight conductor carrying current are circular and lie in planes perpendicular to the conductor.

What is the direction of the magnetic field inside a long straight current-carry

Practice Questions

Q1
What is the direction of the magnetic field inside a long straight current-carrying conductor?
  1. Outward from the conductor
  2. Inward towards the conductor
  3. Circular around the conductor
  4. No magnetic field present

Questions & Step-by-Step Solutions

What is the direction of the magnetic field inside a long straight current-carrying conductor?
Correct Answer: Magnetic field inside the conductor is zero.
  • Step 1: Identify the long straight conductor that is carrying an electric current.
  • Step 2: Use your right hand to apply the right-hand rule. Point your thumb in the direction of the current flow.
  • Step 3: Curl your fingers around the conductor. The direction your fingers curl represents the direction of the magnetic field lines.
  • Step 4: Understand that the magnetic field lines are circular and lie in planes that are perpendicular to the conductor.
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