Science : Ch 13 – Magnetic Effects of Electric Current

Magnetic effect of current was identified by:

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

By which instrument, the presence of magnetic field be resolved?

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

When current is parallel to magnetic field, then force experience by the current carrying conductor placed in uniform magnetic field 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:

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

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

Which of the following is not attracted by a magnet:

Commercial electric motors do not use

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