Two identical conductors `P` and `Q` are placed on two friction less rails `R` and `S` in a uniform magnetic field directed into the plane. If `P` is moved in the direction shown in figure with a constant speed, then rod `Q`

Two idential conductors P and Q are placed on two frictionless rails R and S in a uniform magnetic field directed into the plane. If P is moved in the direction shown in figure with a constant speed, then rod Q

A thin, uniform rod with negligible mass and length 0.200m is attached to the floor by a frictionless hinge at point P (as shown in fig) A horizontal spring with force constant k=4.80Nm^-1 connects the other end of the rod to a vertical wall. The rod to a vertical wall. The rod is in a uniform magnetic field B=0.340T directed into the plane of the figure. There is current I=6.50 A in the rod, in the direction shown. Calculate the torque due to the magnetic force on the rod, for an axis at P.

A thin, uniform rod with negligible mass and length 0.200m is attached to the floor by a frictionless hinge at point P (as shown in fig) A horizontal spring with force constant k=4.80Nm^-1 connects the other end of the rod to a vertical wall. The rod to a vertical wall. The rod is in a uniform magnetic field B=0.340T directed into the plane of the figure. There is current I=6.50 A in the rod, in the direction shown. Calculate the torque due to the magnetic force on the rod, for an axis at P.

The loop shown moves with a velocity v in a uniform magnetic field of magnitude B , directed into the paper. The potential differene between point P and Q is e. Then

The loop shown moves with a velocity v in a uniform magnetic field of magnitude B , directed into the paper. The potential differene between point P and Q is e. Then

a copper rod of mass m slides under gravity on two smooth parallel rails with separation I and set at an angle of theta with the horiziontal at the bottom rails are joined by resistance R. There is a uniform magnetic field B normal to the plane of the rails as shown in the figure The terminal speed of the copper rod is :

a copper rod of mass m slides under gravity on two smooth parallel rails with separation I and set at an angle of theta with the horiziontal at the bottom rails are joined by resistance R. There is a uniform magnetic field B normal to the plane of the rails as shown in the figure The terminal speed of the copper rod is :

A conducting rod of length l slides at constant velocity v on two parallel conducting rails, placed in a uniform and constant magnetic field B perpendicular to the plane of the rails as shown in Fig.3.49. A resistance R is connected between the two ends of the rails. (a) Idenify the cause which produces change in magnetic flux. (b) Identify the direction of current in the loop. ( c) Determine the emf induced in the loop. (d) Compute the electric power dissipated in the resistor. (e) Calcualte the mechenical power required to pull the rod at a cinstant velovity.

A conducting rod of length l slides at constant velocity v on two parallel conducting rails, placed in a uniform and constant magnetic field B perpendicular to the plane of the rails as shown in Fig.3.49. A resistance R is connected between the two ends of the rails. (a) Idenify the cause which produces change in magnetic flux. (b) Identify the direction of current in the loop. ( c) Determine the emf induced in the loop. (d) Compute the electric power dissipated in the resistor. (e) Calcualte the mechenical power required to pull the rod at a cinstant velovity.