Science : Ch 13 – Magnetic Effects of Electric Current

A current-carrying conductor is clench in totally vertical direction. In order to produce a clockwise magnetic feld around the conductor, the current should passed in the conductor:

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:

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

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

The strength of each of magnet reduces to half when it cut along its length into the equal parts magnetic field strength of a solenoid. Polarity of solenoid can be determined by:

A soft iron bar is introduced inside the current carrying solenoid. The magnetic field inside the solenoid:

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

Direction of rotation of a coil in electric motor is intent by:

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

Overloading is caused to:

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

Which of the following is not attracted by a magnet:

The phenomenon discovered by Faraday.

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

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