Science : Ch 13 – Magnetic Effects of Electric Current

Inside the magnet, the field lines move from :

For a current in a long straight solenoid N and S-poles are created at the two ends. Among the subsequent declaration , the incorrect declaration is:

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

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

Example of permanent magnet is

A coil of many circular turns of wire wrapped in the shape of a cylinder

The change in magnetic feld lines in a coil is the cause of induced electric current in it. Name the underlying phenomenon.

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

Commercial electric motors do not use

The phenomenon discovered by Faraday.

The deflection of the galvanometer becomes zero the moment the motion of

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

You are holding the current-carrying wire in your right hand so that your thumb points in the direction of current, then the direction in which your fingers encircle the wire will give the direction of the magnetic feld lines around the wire.explain