Science : Ch 13 – Magnetic Effects of Electric Current

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:

Which of the subsequent is not attracted by a magnet:

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

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:

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:

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

Which of the following is not attracted by a magnet:

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

The phenomenon discovered by Faraday.

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