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A straight wire of mass 200 g and length...

A straight wire of mass 200 g and length 1.5 m carries a current of 2 A. It is suspended in mid-air by a uniform horizontal magnetic field B. What is the magnitude of the magnetic field?

Text Solution

Verified by Experts

We have for mid-air suspension,
`mg=ilB`
`implies B=(mg)/(il)=(0.2xx9.81)/(2xx1.5)=0.65T`
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