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Question

A current is passed through a straight wire. The magnetic field established around it has its lines of force


A

Circular

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B

Elliptical

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C

Oval

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D

parabolic

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Solution

The correct option is A

Circular


Explanation of correct option:

  1. When current is passed through a wire, magnetic fields are formed in concentric circles around it.
  2. As we move farther, the concentric circles become larger. This is because as we move away from the conductor, the strength decreases.
  3. Thus, a current is passed through a straight wire. The magnetic field established around it has circular lines of force.
  4. Hence, the correct option is (A).

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