12 45 R A 50 cm long metal rod moves along the two rails in

Last updated: 5/3/2023

12 45 R A 50 cm long metal rod moves along the two rails in a plane of the circuit shown and is placed perpendicular to the magnetic field indicated by x B 0 15 T If R 4 0 ohm and a constant force of 7 4 mN is needed to maintain the uniform speed v of the rod what would be this uniform speed 3 76 m s O 5 26 m s O 1 16 m s O 4 90 m s