Science : Ch 13 – Magnetic Effects of Electric Current

An electron moves with a speed v along positive direction of the x-axis. If a magnetic feld B acts along the positive y-direction, then the force on the electron will act along:

The magnetic field lines:

Magnetic effect of current was identified by:

Relative strength of magnetic field at a point in the space adjoining the magnet is shown by the:

The strength of each of magnet reduces to half when it cut along its length into the equal parts magnetic field strength of a solenoid. Polarity of solenoid can be determined by:

The instrument that use to direct electric current in the circuit is known as:

A D.C generator works on the theory of:

Overloading is caused to:

The current which is created due to the relative motion of coil or magnet

The name of the effect being produced by the moving magnet

Which of the following is not attracted by a magnet:

The phenomenon discovered by Faraday.

The law states that if the forefinger indicates the direction of the magnetic field and thumb shows the direction of motion of conductor, then the middle finger will show the direction of induced current

A device that can convert electrical energy into mechanical energy is

Two magnetic feld lines never intersect because the resultant force on a north pole at any point can only be in