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  4. A conducting loop carrying a current I is placed in a uniform magnetic field pointing into the plane of the paper as shown. Then, the loop will have a tendency to <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/p-lymjmnhr8owwrii9.jpg />

Q. A conducting loop carrying a current is placed in a uniform magnetic field pointing into the plane of the paper as shown. Then, the loop will have a tendency to
Question

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Solution:

The net force on a current-carrying loop in a uniform magnetic field is zero. Hence, the loop cannot translate.
Solution
From Fleming's left-hand rule, we can see that if the magnetic field is perpendicular to paper inwards and current in the loop is clockwise the magnetic force on each element of the loop is radially outwards or the loop will have the tendency of expanding.