Figure shows the to views of a rod that can slide without friction. The resistor is `6.0Omega` and a `2.5T` magnetic field is directed perpendicularly downward into the paper. Let `l=1.20m`.

a. Calculate the force `F` required to move the rod to the right at a constant speed of `2.0 m/s`,
b. At what rate is energy deliered to the resistor?
c. Show that this rate is equal to the rate of work done by the applied force.

For the situation shown in the figure, what should be the value of force required to move the rod with constant velocity v = 2 m/s ?

The figure shows a metal rod (PQ), which makes contact and complete the circuit. The circuit is perpendicular to the magnetic field with B=1 T. If the resistance is 2 Omega , then force required to move the rod and indicated with a constant speed of 2m/s is

A 0.5 m long metal rod PQ completes the circuit as shown. The area of the circuit is perpendicular to the magnetic field of flux density 0.15 T. If the resistance of the total circuit is 3Omega , calculate the force needed to move the rod in the direction as indicated with a constant speed of 2 m/s.

As shown in figure, a metal rod completes the circuit. The circuit area is perpendicular to a magnetic field with B = 0.15 T . If the resistance of the total circuit is 3 Omega , how large a force is needed to move the rod as indicated with a constant speed of 2 m/s?

As shown in figure, a metal rod completes the circuit. The circuit area is perpendicular to a magnetic field with B = 0.15 T . If the resistance of the total circuit is 3 Omega , how large a force is needed to move the rod as indicated with a constant speed of 2 m/s?

A metallic rod completes its circuit as shown in the figure. The circuit is normal to a magnetic field of B=0.15 tesla. If the resistances of the rod is 3Omega the force required to move the rod with a constant velocity of 2m//sec is-

A rod PQ is connected to the capacitor plates. The rod is placed in a magnetic field (B) directed downwards perpendicular to the plane of the paper. If the rod is pulled out of magnetic field with velocity vec(v) as shown in Figure.

A rod PQ is connected to the capacitor plates. The rod is placed in a magnetic field (B) directed downwards perpendicular to the plane of the paper. If the rod is pulled out of magnetic field with velocity vec(v) as shown in Figure.

Two long parallel horizontal rails a, a distance d aprt and each having a risistance lambda per unit length are joing at one end by a resistance R. A perfectly conduction rod MN of mass m is free to slide along the rails without friction (see figure). There is a uniform magnetic field of induction B normal to the plane of the paper and directed into the paper. A variable force F is applied to the rod MN such that, as the rod moves a constant current flows through R. (i) Find the velocity of the rod and the applied force F as function of the distance x of the rod from R. (ii) What fraction of the work done per second by F is converted into heat?