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Electromagnetic Induction

As shown in f...

Question

As shown in figure, a current carrying coil ABCD is placed in magnetic field. Which Portion of coil does not experience any magnetic force?

A

Portion AB

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B

Portion BC

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C

Portion CD

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D

Both Option A and B

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Solution

The correct option is B Portion BC
Solution
Force on wire due to magnetic field is $i L B s i n θ$
$θ$ is angle between current carrying element and magnetic field
For length BC $θ$ is 0
Therefore no Force will act on BC
The correct option is B

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