CBSE Class 12-science Answered
A circular coil in the form of quadrilateral is placed in a uniform magnetic field and a current flow through it. The net magnetic force acting on opposite side
a) must be zero
b) may be zero
c) must not be zero
D) may not be zero
Asked by girish.me.47 | 08 Sep, 2019, 06:54: AM
Expert Answer
Force F on a current carrying conductor in uniform magnetic field = B×i×l ,
where B is magnetic field, i is current and l is length of conductor.
If the coil is in the form of quadrilateral, opposite sides may not be equal.
Sign of the forces in opposite sides are opposite due to opposite current direction.
Since force is proportional to length, magnitude of forces may not be equal.
Hence the net magnetic force acting on opposite sides may not be zero.
Answered by Thiyagarajan K | 08 Sep, 2019, 07:55: AM
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