Name the factors on which the force acting on a current-carrying conductor placed in a magnetic field depends.

$(a)$ Name two electrical appliances of daily use in which an electric motor is used.
$(b)$ Name and state the principle on which an electric motor works.

An electron enters a uniform magnetic field at right angles to it as shown in the figure below. In which direction will this electron move? State the rule applied by you in finding the direction of motion of the electron.

When is the force experienced by a current-carrying conductor placed in a magnetic field the largest?

Name the rule used to find the direction of force on a current-carrying conductor placed in a magnetic field.

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?