Moving Charges ...

Two parallel beams of positrons moving in the same direction will

An uncharged particle is moving with a velocity of $$\vec { v } $$ in non-uniform magnetic field as shown. Velocity $$\vec { v } $$ would be:

When a positively charged particle enters into a uniform magnetic field with uniform velocity, its trajectory can be
(i) A straight line
(ii) A circle
(iii) A helix

A charged particle enters a magnetic field H with its initial velocity making an angle of $$45^o$$ with H. Then the path of the particle will be

Two wires carrying

An electron is traveling along the x-direction. It encounters a magnetic field in the y-direction. Its subsequent motion will be

A deuteron of kinetic energy $$50\ keV$$ is describing a circular orbit of radius $$0.5$$ metre in a plane perpendicular to the magnetic field $$B$$. The kinetic energy of the proton that describes a circular orbit of radius $$0.5$$ metre in the same plane with the same $$B$$ is

When $$0.50\overset {\circ}{A}$$ X-rays strike a material, the photoelectrons from the $$k$$ shell are observed to move in a circle of radius $$23\ mm$$ in a magnetic field of $$2\times 10^{-2}$$ tesla acting perpendicularly to the direction of emission of photoelectrons. What is the binding energy of $$k-shell$$ electrons?

A positively charged particle projected towards east is deflected towards north by a magnetic field. The field may be :

When a charged particle is acted on only by a magnetic force, its: