A conducting rod PQ of a small resistance is moved at a constant velocity v under the effect of a constant force F through a region of the constant magnetic field as shown. Assume no energy losses.
If the emf induced across PQ is ε and a force F and power P is used to move the rod, then which of the following graphs correctly represent ε, F, and P as a function of speed v respectively?
A. Graphs 5, 3 and 1
B. Graphs 2, 4 and 5
C. Graphs 4, 1 and 3
D. Graphs 3, 2 and 4
