Exercise

Where do we use electrical energy in our day-to-day life?

A circular loop placed in a plane perpendicular to the plane of paper carries a current when the key is ON. The current as seen from points A and B (in the plane of paper and on the axis of the coil) is anti-clockwise and clockwise respectively. The magnetic field lines point from B to A. The N-pole of the resultant magnet is on the face close to

A magnetic field directed in north direction acts on an electron moving in east direction. The magnetic force on the electron will act

The figure below shows a chamber in which a uniform magnetic field is present. An electron enters the chamber from the left side and a proton enters the chamber from the right side, as shown in the figure. Ignore gravity.

Initially, the forces on the electron and the proton due to the magnetic field are:

In the arrangement shown in figure there are two coils wound on a non-conducting cylindrical rod. Initially, the key is not inserted. Then the key is inserted and later removed. Then

Name the following diagrams and explain the concept behind them.

Electromagnetic induction means

When the speed of the coil of generator is increased