1.

A compass needleis placed near a current - carryingstraight wire . Stateyourobservation when the currentin the wire is increased . Givereason .

Answer»

SOLUTION :Thedeflectionof the COMPASS needleincreases .
REASON : Magneticfieldstrenghtproduced NEAR a CURRENT - carryingstraightwireis directlyproportional to the current .


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