Science : Ch 13 – Magnetic Effects of Electric Current

Fleming’s Right-hand rule gives:

Inside the magnet, the field lines move from :

The magnetic feld inside a long straight solenoid carrying current is:

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

The nature of magnetic field line passing through the centre of current carrying circular loop is:

Which of the following component influence the strength of force experience by a current carrying conduct in a uniform magnetic field?

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

A magnet is moved towards a coil (i) quickly (ii) slowly. The induced potential difference:

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

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

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

The magnetic feld inside a long straight solenoid carrying current is

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