1.

A conductor of length 20cm and mass 18 mg lies in a direction of 60^@N of E. If the horizontal component of earth's magnetic field is 36 mu T , the current to be passed in the conductor so that it is suspended in air is (g = 10 ms^(-2) )

Answer»

`20A`
`50 A `
`40 A `
`10 A`

Answer :B


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