A wire of length l is bent in the form a...

A wire of length l is bent in the form a circular coil of some turns. A current I flows through the coil. The coil is placed in a uniform magnetic field B. The maximum torqur on the coil can be

`iBl^(2)`

`4piiBl^(2)`

`(il^(2)B)/(4pi)`

zero

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