A charged particle is released from rest in a region of steady uniform electric and magnetic fields which are parallel to each other the particle will move in a

A particle moving in a magnetic field increases its velocity, then its radius of the circle

A homogeneous electric field $E$ and a uniform magnetic field $\mathop B\limits^ \to $ are pointing in the same direction. A proton is projected with its velocity parallel to $\mathop E\limits^ \to $. It will

Electrons moving with different speeds enter a uniform magnetic field in a direction perpendicular to the field., time periods of rotation will be :

What is Lorentz force ? Write an expression for it

Bob of a simple pendulum of length $l$ is made of iron . The pendulum is oscillating over a horizontal coil carrying direct current. If the time period of the pendulum is $T$ then