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:

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:

Commercial electric motors neglect :

Magnetic effect of current was identified by:

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:

A soft iron bar is introduced inside the current carrying solenoid. The magnetic field inside the solenoid:

Direction of rotation of a coil in electric motor is intent by:

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

The commercial motors use a soft iron core on which the coil is wound because

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.

The magnetic feld inside a long straight solenoid carrying current is