In a metal wire of mass m=24.1 mg can slide with negligible friction on two horizontal parallel rails separated by distance d=2.56 cm . The track lies in a vertical uniform magnetic field of magnitude 56.3 m. At time t=0 , device G is connected to the rails . producing a constant current i=9.13 mA in the wire and rails (even as the wire moves). At t=61.1 ms , what are the wire's (a) speed and (b) direction of motion (left or right)?

A metal wire of mass m slides without friction on two horizontal rails spaced distance d-apart as shown in figure. The rails are situated in a uniform magnetic field B, directed vertically upwards, and a battery is sending a current I through them. Find the velocity of the wire as a function of time, assuming it to be at rest initially.

A conducting wire of length l and mass m can slide without friction on two parallel rails and is connected to capacitance C . The whole system lies in amagnetic field B and a constant force F is applied to the rod . Then

A matel wire PQ of mass 10g lies at rest on two horizontal metal rails separated by 4.90 cm . A vertically downward magnetic field of magnitude 0.800 T exists in the space. The resistance of the circuit is slowly decreased and it is found that when the resistance goes below 20.0 Omega , the wire PQ starts sliding on the rails. Find the coefficient of friction.

A metal wire PQ of mass 10g lies at rest on two horizontal metal rails separated by 5cm as shown in Fig. A vertically downward magnetic field of magnitude 0.80T exist in the space. The resistance of the circuit is slowly decreased and it is found that when the resistance goes below 20.0Omega the wire PQ starts sliding on the rails. The coefficient of friction between wires and rails is found. The coefficient of friction between wires and rails is found to be n//25 . find n

Consider the situation shown in the figure. The wire PQ has mass m , resistance r and can slide 0n the smooth, horizontal parallel rails separated by a distance l . The resistance of the rais is negiligible. A uniform magnetic field B exists in the reactangular region and a resistance R connects the rail outside the field region. At t=0 , the wire PQ is pushed toward right with a speed v_(0) . Find (a) the current in the loop at an instant when the speed of the wire PQ is v (b) the acceleration of the wire as this instant (c) the velocity v as a function of x (d) the maximum distance the wire will move (e) the velocity as a function of time

A metal wire PQ of mass 10 gm lies on two horizontal metal rails separated by 4.90 cm (figure).A vertically downward magnetic field of magnitude 0.800 T exists in the space.The resistance of the circuit is slowly decreased and it is found that when the resistance goes below 20.0 Omega the wire PQ starts sliding on the rails.Find the coefficient of friction.Neglect magnetic force acting on wire PQ due to metal rails (g=9.8 m//g^(2))