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What is the direction of the magnetic field around a straight current-carrying c

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

Options:

  1. From north to south
  2. From south to north
  3. Clockwise
  4. Counterclockwise

Correct Answer: Counterclockwise

Solution: 

The direction of the magnetic field around a straight current-carrying conductor can be determined using the right-hand rule, which indicates that the field lines form concentric circles around the conductor in a counterclockwise direction when viewed from the positive end.

What is the direction of the magnetic field around a straight current-carrying c

Practice Questions

Q1
What is the direction of the magnetic field around a straight current-carrying conductor?
  1. From north to south
  2. From south to north
  3. Clockwise
  4. Counterclockwise

Questions & Step-by-Step Solutions

What is the direction of the magnetic field around a straight current-carrying conductor?
  • Step 1: Identify the straight conductor that is carrying an electric current.
  • Step 2: Determine the direction of the current flow (from positive to negative).
  • Step 3: Use your right hand to apply the right-hand rule: point your thumb in the direction of the current.
  • Step 4: Curl your fingers around the conductor. The direction your fingers curl shows the direction of the magnetic field lines.
  • Step 5: Note that the magnetic field lines form concentric circles around the conductor.
  • Step 6: If you are looking from the positive end of the conductor, the magnetic field lines will move in a counterclockwise direction.
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