Consider a variation of the previous problem. Suppose the circular loop lies in a vertical plane. The rod has a mass m. The rod and the loop have negligible resistances but the wire connecting O and C has a resistance R. The rod is made to rotate with a uniform angular velocity `omega` in the clockwise direction by applying a force at the midpoint of OA in a dirction perpendicular ot it. find the magnitude of this force when the rod makes an angle `theta` with the vertical.

Consider the situation shown in the figure of the previous problem. Suppose the wire connecting O and C has zero resistance but the circular loop has a resistance R uniformly distributed along its length. The rod OA is made to rotate with a uniform angular speed (omega) as shown in the figure. Find the current in the rod when -AOC = 90^(@)

Consider the situation shown in the figure of the previous problem. Suppose the wire connecting O and C has zero resistance but the circular loop has a resistance R uniformly distributed along its length. The rod OA is made to rotate with a uniform angular speed (omega) as shown in the figure. Find the current in the rod when -AOC = 90^(@)

Consider the situation shown in the figure of the previous problem. Suppose the wire connecting O and C has zero resistance but circular loop has a resistance R uniformly distributed along its length. The rod OA is made to rotate with a uniform angular speed omega as shown in the figure. Find the current in the rod when ltAOC = 90^@ .

Consider the situation shown in the figure of the previous problem. Suppose the wire connecting O and C has zero resistance but circular loop has a resistance R uniformly distributed along its length. The rod OA is made to rotate with a uniform angular speed omega as shown in the figure. Find the current in the rod when ltAOC = 90^@ .

Consider the situation shown in the figure o fthe previous problem. Suppose the wire connecting O and C has zero resistance but circular loop has a resistance R uniformly distributed along its length. The rod OA is made ot rotate with a uniform angular speed omega as shown in the figure. Find the current in the rod when ltAOC = 90^@ .

Shows a conducting circular loop radius a placed in a uniform, perpendicular magnetic field B. A metal rod OA is pivoted at the centre O of the loop. The other A of the rod touches the loop. The rod OA and the loop are resistanceless but a resistor having a resistance R is connected between O and a fixed point C on the loop . the rod OA is made to rotate anticlockwise at a small but uniform angular speed omega by an external force. Find (a) the current in the resistance R and (b) the torque of the external force needed ot keep the rod rotating with the constant angular velocity omega.

Shows a conducting circular loop radius a placed in a uniform, perpendicular magnetic field B. A metal rod OA is pivoted at the centre O of the loop. The other A of the rod touches the loop. The rod OA and the loop are resistanceless but a resistor having a resistance R is connected between O and a fixed point C on the loop . the rod OA is made to rotate anticlockwise at a small but uniform angular speed omega by an external force. Find (a) the current in the resistance R and (b) the torque of the external force needed ot keep the rod rotating with the constant angular velocity omega.

A conducting rod OA of length l is rotated about its end O with an angular velocity omega in a uniform magnetic field directed perpendicualr to the rotation. Find the emf induced in the rod, between it's ends.

Figure shows a situation similar to the previous problem. All parameters are the same except that a battery of emf epsilon and a variable resistance R are connected between O and C. The connecting wires have zero resistance. No external force is applied on the rod (except gravity, forces by the magnetic field and by the pivot). In what way should the resistance R be changed so that the rod may rotate with uniform angular velocity in the clockwise direction? Express your answer in terms of the given quantities and the angle (theta) made by the rod OA with the horizontal.

Figure shows a situation similar to the previous problem. All parameters are the same except that a battery of emf epsilon and a variable resistance R are connected between O and C. The connecting wires have zero resistance. No external force is applied on the rod (except gravity, forces by the magnetic field and by the pivot). In what way should the resistance R be changed so that the rod may rotate with uniform angular velocity in the clockwise direction? Express your answer in terms of the given quantities and the angle (theta) made by the rod OA with the horizontal.