Q. A conducting rod moves towards right with constant velocity v in uniform transverse magnetic field. Graph between force applied by the external agent v/s velocity and power supplied by the external agent v/s velocity.. (l) Straight. line, parabola (2) Parabola, Straight line (3) Straight line, Straight line (4) Parabola, Parabola Share with your friends Share 2 Decoder_2 answered this Dear student, let us consider coil PQRS as shown above.Area of coil=lx=∆Sflux =Blx=ϕdϕdt=d(Blx)dt=Blvenduced emf, e=-dϕdt=Blv(as x is decreasing)current in the loop is given by,I=εR=BlvRForec required is given by,F=BILF=B2l2vRhence F∝v so the graph will be a straight line since power=force×velocityso P∝v2 so the graph will be a parabolaHence the correct option is (1)Regards 9 View Full Answer