JEE Mains · Physics · STD 12 - 4. Moving charges and magnetism
A loop of flexible wire of irregular shape carrying current is placed in an external magnetic field. Identify the effect of the field on the wire.
- A Loop assumes circular shape with its plane normal to the field.
- B Loop assumes circular shape with its plane parallel to the field.
- C Wire gets stretched to become straight.
- D Shape of the loop remains unchanged.
Answer & Solution
Correct Answer
(A) Loop assumes circular shape with its plane normal to the field.
Step-by-step Solution
Detailed explanation
Every part \(( d \ell)\) of the wire is pulled by force \(i ( d \ell) B\) acting perpendicular to current \(\&\) magnetic field giving it a shape of circle.
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