An irregular shaped with PQRS placed in uniform magnetic filed perpendicular to the plane of the paper changes into a circular shape. State, which reason, the direction of the induced current iin the loop.

An irregular shaped wire PQRS shown in the figure. placed in a uniform magnetic field perpendicular to the plane of the paper changes into a circular shape. Show with reason the direction of the induced current in the loop.

The closed loop PQRS is moving into a uniform magnetic field acting at right angles to the plane of the paper as shown in Fig 6.50 state the direction in which the induced current flows in the loop.

An electron beam of velocity v moving in the plane of paper enters a region of uniform magnetic field, which is perpendicular to the plane of the paper and traels in a circular path.Does the kinetic energy of electron change during this time? Give reason.

Fig. below shows planer loops of different shapes moving out or into a region of magnetic field, which is directed normal to the plane of the loop and away from the reader. Determine the direction of induced current. in each loop using Lenz's law.

A square current carrying loop is suspended in a uniform magnetic field acting perpendicular to the plane of the loop. If the force on one arm of the loop is vec(F) , the net force on the remaining three arms of the loop is

A rectangular conductor LMNO is placed in a uniform magnetic field vecB directed perpendicular to the plane of conductor . Obtain an expression for the e.m.f. induced in the arm MN, when the arm is moved toward the left with a speed v.

A particle with charge q moving with a velocity v in the plane of the paper enters a uniform magnetc field B, acting perpendicular to the plane of the paper. Deduce an expression for the tie period of the charge, as it moves in a circular path in the field. Why does the kinetic energy of the charge not change, while moving in the magnetic field?

A circular brass loop of radius a and resistance R is placed with its plane perpendicular to the magnetic field which varies with time as B=B_0 sin omegat . Obtain an expression for the induced current in the loop.

Figure shows a rectangular conductor PQRS in which the conductor PQ is free to move in a uniform magnetic field B perpendicular to the plane of the paper.The field extends from x=0 to x=b and is zero for x>b.Assume that only the arm PQ posses resistance r.When the arm PQ is pulled outward from x=0 with constant speed v, obtain the expressions for the flux and the induced emf with distance 0≤x≤2b

A loop of iregular shape carrying current is located in an external magnetic field. If the wire is flexible, why does it change to a circular shape?