Figure shows a wire ab of length l which can slide on a U-shaped rail of negligible resistance. The resistance of the wire is R. The wire is pulled to the right with a constant speed v. Draw an equivalent circuit diagram representing the induced emf by a battery. Find the current in the wire.

A long U -shaped wire of width l placed in a perpendicular uniform and constant magnetic field B (figure).A wire of length l is slid on the U -shaped wire with a constant velocity v towards right.The resistance of all the wires is r per unit length.At t=0 , the sliding wire is close to the left edge of the fixed U -shaped wire.Draw an equivalent circuit diagram at time t , showing the induced emf as a battery.Calculate the current in the circuit.

A wire of length 100 cm is connected to a cell of emf 2 V and negligible internal resistance. The resistance of the wire is 3 Omega . The additional resistance required to produce a potential drop of 1 milli volt per cm is

Figure shows a wire ab of length L and resistance R which can slide on a smooth pair of rails. I_(g) is current generator which supplies a constant current i in the circuit. If the wire ab slide at a speed v towards right, find the potential difference below a and b (b) The current generator I_(g) show in the figure sends a constant current i through the circiut. The wire ab has a length L and mass m and can slide on the smooth horizontal rails connect to I_(g) . The entire system lies in a vertical magnetic field B . Find the velocity of the wire as a function of time. (c) The system containing the rails and the wire of the previous part is kept vertically in a uniform horizontal magnetic field B that is perpendicular to the plane of the rails (figure). If is found that the wire stays in equilibrium. If th ewire ab is replaced by another wire of double its mass, how long will lit take in falling through a distance equal to its length? The current generator I_(g) shown in figure sends a constant current i through the circuit. The wire cd is fixed and wire ab is made to slide on the smooth, thick rails with a constant velocity v toward right. Each of these wires has resistance r . Find the current through the wire cd .

Consider the situation shown in the figure. The wire Ab is sliding on the fixed rails with a constant velocity. If the wire AB is replaced by semicircular wire, the magnitude of the induced current will

Figure shows a wire of resistance R sliding on two parallel, conducting fixed thick rails placed at a separation l. A magnetic fild B exist in a direction perpendicular to the plane of the rails. The wire is moving with a constant velocity v. Find current through the wire

Shows an irregular shaped wire AB moving with velocity v . Find the emf induced in the wire.

For resistances are connected by an ideal battery of emf 15 V, the circuit is in steady - state then the current (in ampere) in wire AB is :

In the given circuit diagram , a connecting wire of negligible resistance is joining the points B and D, the current in the connecting wire is

Figure shows a wire frame PQSTXYZ placed in a time varying magnetic field give as B=betat . Where beta is a positive constant Resistance per unit length of the wire is lambda . Find the current induced in the wire and drawn electrical equivalent diagram.