Suppose a disc is rotating counter clockwise in the plane of the paper then .

A disc is rotating in the anticlockwise direction in the xy plane with decreasing angular velocity: What is direction of the angular acceleration ?

A negatively charged disc is rotated clock-wise. What is the direction of the magnetic field at any point in the plane of the disc?

A circular disc is rotated along clockwise direction in horizontal plane. The direction of torque is

A space is divided by the line AD into two regions. Region I is field free and the region II has a uniform magnetic field B directed into the paper. ACD is a semicircular conducting loop of radius r with centre at O, the plane of the loop being in the plane of the paper. The loop is now made to rotate with a constant angular velocity  about an axis passing through O, and perpendicular to the plane of the paper in the clockwise direction. The effective resistance of the loop is R. Plot a graph between the induced emf and the time of rotation for two periods of rotation.

If the lines of force due to a current carrying straight conductor are in anti-clockwise direction and lie in the plane of paper, the current is flowing ________

If z = 2 - 2i, find the rotation of z by theta radians in the counter clockwise direction about the origin when theta = (3pi )/(2)