Question Answers

Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > What is the magnitude of magnetic field at the centyre O of loop of radius root 2 m made of uniform wire when a current of 1 A enters in the loop and is taken out of it by two long wires as shown in figure ?

What is the magnitude of magnetic field at the centyre O of loop of radius root 2 m made of uniform wire when a current of 1 A enters in the loop and is taken out of it by two long wires as shown in figure ?

A cylindrical wire of radius R is carrying current uniformly distributed current i over its cross section . If a circular loop of radius r is taken as amperian loop then the variation value of phi B.dl over this loop with radius r of loop will be best represented by