Moving Charges ...

A electron with kinetic energy $$k$$ enters a region (i) uniform magnetic field (ii) non-uniform magnetic field and comes out with kinetic energy $$k_1$$ and $$k_2$$ respectively. What is relation between $$k_1, k_2$$ and $$k$$?

Which of these particles will have minimum frequency of revolution when projected with the same velocity perpendicular to a magnetic field ?

Cathode rays and canal rays produced in a certain discharge tube are deflected in the same direction if

When an electron moves through a magnetic field, its speed will

An electron and a proton are injected into a uniform magnetic field at right angle to its direction with the same momentum. Then

An electron is not deflected on passing through a certain region, because 

A $$\beta -$$ particle enters a magnetic field making an angle of $$45^{o}$$ with the field lines. The path of the particle is

An electron enters a magnetic field with a speed of $$10^{8} cm/s$$. The particle experiences a force due to the magnetic field and the speed of the electron

An electron is projected into a magnetic field along the lines of force. Then

When a charged particle moves through a magnetic field, the quantity which is not affected in the magnetic field is: