A long wire AB is placed on a table. Ano...

A long wire `AB` is placed on a table. Another wire `PQ` of mass `1.0 g` and length `50cm` is set to slide on two rails `PS` and `QR`. A current of `50 A` is passed through the wires. At what distance above `AB`, will the wire `PQ` be in equilibrium?

`25 mm`

`50 mm`

`75 mm`

`100mm`

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