The direction of induced potential difference (induced current) is given by:

$A$ uniform magnetic field exists in the plane of paper pointing from left to right as shown in Figure. In the field,an electron and a proton move as shown. The electron and the proton experience:

Imagine that you are sitting in a chamber with your back to one wall. An electron beam,moving horizontally from the back wall towards the front wall,is deflected by a strong magnetic field to your right side. What is the direction of the magnetic field?

$(a)$ Describe an experiment with a diagram to show that force is exerted on a current-carrying conductor when placed perpendicular in a magnetic field.
$(b)$ How will this force change if the current in the conductor is increased?
$(c)$ Name a device that uses the above principle.

In an electric motor,the direction of current in the loop reverses after every $........$ rotation.

When a light,straight conducting wire is suspended perpendicular to a strong magnetic field and an electric current is passed through it,the magnetic force acting on it is proportional to which of the following?