A magnetic needle lying parallel to a magnetic field requires W units of work to turn it through 60∘. The torque needed to maintain the needle in this position will be

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A magnetic needle lying parallel to a magnetic field requires W units of work to turn it through 60∘. The torque needed to maintain the needle in this position will be
21
Nov
A magnetic needle lying parallel to a magnetic field requires W units of work to turn it through 60∘. The torque needed to maintain the needle in this position will be A magnetic needle lying parallel to a magnetic field requires W units of work to turn it through 60∘. The torque needed to maintain [...]
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