`AB` and `CD` are smooth, parallel, horizontal rails on which a conductor `T` can slide. `A` cell, `E`, drives current `I` through the rails and `T`

(i) The current in the rails will set up a magnetic field over `T`
(ii) `T` will experienced a force to the right
(iii) `T` will experienced a force to the left
(iv) `T` will not experienced any force

Options

A. (i), (ii)
B. (ii), (iv)
C. (ii), (iii)
D. (i), (iv)

Answer

A

Explanation

Magnetic field on `T` will be along `+z` direction `vec(F)_(m) = ivec(l) xx vec(B) = i(l hat(j) xx B hat(k)) = i l M hat(i)`