Science : Ch 13 – Magnetic Effects of Electric Current

Fleming’s Right-hand rule gives:

Inside the magnet, the field lines move from :

Commercial electric motors neglect :

Which of the subsequent is not attracted by a magnet:

The magnetic field lines:

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

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 name of the effect being produced by the moving magnet

when an iron core is inserted into a current carrying solenoid

Example of permanent magnet is

The change in magnetic feld lines in a coil is the cause of induced electric current in it. Name the underlying phenomenon.

Commercial electric motors do not use

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

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

When a strong bar magnet is pushed into a coil of insulated copper wire connected to a galvanometer, we will observe a deflection in the galvanometer in