The current in the coil is reversed and the coil is rotated about its vertical axis by an angle of $90^{\circ}$ in the anti clock wise sense looking from above . Predict the direction of the needle. Take the negative declination at the places to be zero.

Question

$\begin{array}{1 1} West \;to\;East \\ North \;to\;South \\ South \;to \;north \\ East \;to\;west \end{array}$