Science : Ch 13 – Magnetic Effects of Electric Current

Inside the magnet, the field lines move from :

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:

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

Magnetic effect of current was identified by:

Which of the following declaration is not correct about the magnetic field?

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

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

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:

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

Commercial electric motors do not use

The magnetic feld inside a long straight solenoid carrying current is

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

You are holding the current-carrying wire in your right hand so that your thumb points in the direction of current, then the direction in which your fingers encircle the wire will give the direction of the magnetic feld lines around the wire.explain

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