The ratio of magnetic force to electric force on a charged particle getting undeflected in a field is?
a) 1
b) 0
c) 2
d) 4

Give features of force on charge particle inside magnetic field.

Magnetic force exerted on charge moving in magnetic field is _____

Even though an electric field E exerts a force qE on a charged particle yet the electric field of an EM wave does not contribute to the radiation pressure (but transfers energy). Explain.

Electric force on alpha-particle placed in electric Field of 20 xx 10^4 N/C is .......

Lorentz force acting on a charged particle is zero. If electric field is 5V/m , then |(vecBxxvecV)|= ______ .

If the ratio of time periods of circular motion of two charged particles in magnetic field in 1//2 , then the ratio of their kinetic energies must be :

(a) Magnetic field lines show the direction (at every point) along which a small magnetised needle aligns at the point). Do the magnetic field lines also represent the lines of force on a moving charged particle at every point? (b) Magnetic field lines can be entirely confined within the core of a toroid, but not within a straight solenoid. Why? (c) If magnetic monopoles existed, how would the Gauss's law of magnetism be modified? (d) Does a bar magnet exert a torque on itsell due to its own field? Does one element of a current-carrying wire exert a force on another element of the same wtre? (e) Magnetic field arises due to charges in motion. Can a system have magnetic moments even though its net charge is zero?

In uniform magnetic field during circular motion of charge particle, centripetal force is provided by _____.

(a) Magnetic field lines show the direction (at every point) along which a small magnetised needle aligns (at the point). Do the magnetic field lines also represent the lines of force on a moving charged particle at every point ?

Derived force on moving charge in uniform magnetic field with velocity vecv_ .