Science : Ch 13 – Magnetic Effects of Electric Current

A current-carrying conductor is clench in totally vertical direction. In order to produce a clockwise magnetic feld around the conductor, the current should passed in the conductor:

Inside the magnet, the field lines move from :

Which of the subsequent is not attracted by a magnet:

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

Overloading is caused to:

Example of permanent magnet is

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

To determine the direction of force experienced by a current carrying conductor placed in a uniform magnetic feld.

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 magnetic feld inside a long straight solenoid carrying current is

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

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

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