lf a current is passed through a spring then the spring will :

Expand

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Compress

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Remain same

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None of these

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Solution

The correct option is B Compress
Solution : When the current is passed through
the spring, magnetic field
be produced just like in case
of a solenoid .This magnetic
field will interact with current
in the surrounding will and
the net magnetic force experienced
by the coils will be compressive
Option - B is correct.

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