Physics Basic Unit#8 Test

In a loop of wire current is flowing clockwise the direction of magnetic field through loop is

A wire of length 2m carries a current of 10 A. What is the force acting on it when it is placed at an angle of 45° to the uniform magnetic field of 0.15 T?

An electron of mass m is accelerated through a potential difference of V and then it enters a magnetic field of induction B normal to the lines. Then the radius of the circular path is

A wire carrying current I and other 2I in the same direction produces a magnetic field B at the mid-point. What will be the field when 2I wire is switched off at that point?

The magnetic lines of force inside a bar magnet

In step up transformer, voltage in the secondary increases and power in secondary.

In a region, steady and uniform electric and magnetic fields are present. These two fields are parallel to each other. A charged particle is released from rest in this region. The path of the particle will be

Magnetism is related to ____:

The Unit of the magnetic flux density is equal to:

Which of the following does not affect the motion of a moving electron?