Science : Ch 13 – Magnetic Effects of Electric Current

Fleming’s Right-hand rule gives:

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:

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:

When current is parallel to magnetic field, then force experience by the current carrying conductor placed in uniform magnetic field 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 current which is created due to the relative motion of coil or magnet

when an iron core is inserted into a current carrying solenoid

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.

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

The phenomenon discovered by Faraday.

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