Four identical conducting rods are connected by pins. The velocity of point R is v. A uniform magnetic field B acts out of the paper. Choose the correct statement(s). (PQ=PS=4l and QR=SR=3l)

Four identical conducting rods are connected by pins. The velocity of

1.	Four identical conducting rods are connected by pins. The velocity of point R is v. A uniform magnetic field B acts out of the paper. Choose the correct statement(s). (PQ=PS=4l and QR=SR=3l)
Answer» The motional EMF across `PQ` is `(6Blv)/(5)` The motional emf across `PQ` is `(3Blv)/(5)` The motional emf across `QR` is `(3Blv)/(5)` The motional emf across `QR` is `(6Blv)/(5)` Solution :`v=20-x` Force `=mv(DV)/(dx)`

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Four identical conducting rods are connected by pins. The velocity of point R is v. A uniform magnetic field B acts out of the paper. Choose the correct statement(s). (PQ=PS=4l and QR=SR=3l)

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