Imagine a would where free magnetic charges exist. In this world, a circuit is made with a U shape wire and a rod free to slide on it. A current carried by free magnetic charges can flow in the circuit. When the circuit is placed in a uniform electric field. E perpendicular to the plane of the plane of the circuit and the rod is pulled to the right with a constant speed v, the "magnetic EMF" in the current and the direction of the corresponding current. arising because of changing electric flux will be (l is the length of the rod and c is speed of light).

Options

A. vEl clockwise
B. vEL counterclockwise
C. `(vEl)/(c^2)` clockwise
D. `(vEl)/(c^2)` counterclockwise

Answer

D

Explanation

`oint vecB vec(D l) = mu_0 ( I+ epsi_0 ((d phi_E)/(d t)))`
` ( d phi_E )/(d t) = vEl`
` therefore oint vecB . Vec(dl) = mu_0 epsi_0 (v El)implies(vEl)/(C^2)`
Direction of electric field is not given in the question therefore both options are possible.