Electromagnetic Waves — Physics STD 12 Science — Question

A circular loop of radius 4.0cm is placed in a horizontal plane and carries an electric current of 5.0A in the clockwise direction as seen from above. Find the magnetic field:

1. At a point 3.0cm above the centre of the loop.
2. At a point 3.0cm below the centre of the loop.

Is it possible in a LCR series circuit that the value of applied potential on any component of circuit is more than the peak value of applied alternating potential?

A simple pendulum is a point mass suspended by a light thread from a fixed point. The particle is displaced towards one side and then released. It makes small oscillations. Is the motion of such a simple pendulum a pure rotation? If yes, where is the axis of rotation?

Two electrons are kept at a distance of I A from cach other. Calculate the Coulomb force between them.

Is a vector necessarily changed if it is rotated through an angle?

When a dielectric slab is gradually inserted between the plates of an isolated parallel-plate capacitor, the energy of the system decreases. What can you conclude about the force on the slab exerted by the electric field?

Name the electromagnetic radiations used for viewing objects through haze and fog.

In two co-axial same circular coils, same current is flowing in the same direction. If both the coils are brought towards each other, then what will be the change in the current?