List of top Physics Questions on Magnetic Force asked in AIIMS

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R

Assertion (A) : A wire bent into an irregular shape with the points $P$ and $Q$ fixed. If a current $I$ passed through the wire, then the area enclosed by the irregular portion of the wire increases.

Reason (R) : Opposite currents carrying wires repel each other.

In the light of the above statements, choose the correct answer from the options given below

A proton and an alpha particle having the same kinetic energy are moving in circular paths in a uniform magnetic field. The radii of their circular pahts will be equal. Any two charged particles having equal kinetic energies and entering a region of uniform magnetic field $\vec{ B }$ in a direction perpendicular to $\vec{ B }$, will describe circular trajectories of equal radii.