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AP EAMCET202317 May 2023Evening ShiftPhysicsMagnetic Effects of CurrentActual

A wire loop of irregular shape carrying current is placed in an external magnetic field. If the wire is flexible, the shape of the loop changes to

Options

  1. Ahelical
  2. Bcircular
  3. Cstraight line
  4. Dparabolic

Correct answer

B. circular

Step-by-step solution

A loop of irregular shape carrying current when placed in an external magnetic field, it assume circular shape with its plane normal to the field in order to maximum magnetic flux link with loop. This is because for a given perimeter circular encloses maximum area than any other shape.

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