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

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.

A circular loop of radius R carrying a current is placed in a uniform magnetic field with its plane perpendicular to B. The force on 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 metallic square loop ABCD is moving in its own plane with velocity v in a uniform magnetic field perpendicular to its plane as shown in the figure. An electric field is induced.

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

Figure shows a conducting rod PQ in contact with metal rails RP and SQ, which are 0.25 m apart in a uniform magnetic field of flux density 0.4T acting perpendicular to the plane of the paper. Ends R and S are connected through a 5 Omega resistance. What is the emf when the rod moves to the right with a velocity of 5ms^(-1) ? What is the magnitude and direction of the current through the 5 Omega resistance? If the rod PQ moves to the left with the same speed, what will be the new current and its direction?

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.

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.

A charge q moving in a straight line is accelerated by a potential difference V. It enters a uniform magnetic field B perpendicular to its path. Deduce in terms of V an expression for the radius of the circular path in which they travel?