Science : Ch 13 – Magnetic Effects of Electric Current

Inside the magnet, the field lines move from :

Which of the subsequent is not attracted by a magnet:

The magnetic field lines:

Magnetic effect of current was identified by:

A current through a horizontal power line flows from south to North direction. The direction of magnetic field line 0.5m above it is:

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

In electric motor, to make the coil rotating constantly in the identical direction, current is reversed in the coil after every half rotation by a device called:

A D.C generator works on the theory of:

Overloading is caused to:

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

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.

Which of the following is not attracted by a magnet:

The phenomenon discovered by Faraday.

A device that can convert electrical energy into mechanical energy is