Question

An electron with speed v0 << c moves in a circle of radius r0 in a uniform magnetic field. This electron is able to traverse a circular path as the magnetic force acting on the electron is perpendicular to both v0 and B, as shown in the figure. This force continuously deflects the particle sideways without changing its speed and the particle will move along a circle perpendicular to the field. The time required for one revolution of the electron is T0.

If the speed of the electron is now doubled to 2v₀. The radius of the circle will change to ______.

पर्याय

• 4r₀

• 2r₀

• r₀

• `r_0/2`

Answer 1

If the speed of the electron is now doubled to 2v₀. The radius of the circle will change to 2r₀.