If the magnetic field is parallel to the positive y-axis and the charged particle is moving along the positive x-axis (Fig.), which way would the Lorentz force be for (a) an electron (negative charge), (b) a proton (positive charge).

Alpha particles are positively charged.

A positively charged particle is moving along the positive x-axis in a unifom electric field vec E= E_0hatj and magnetic field vec B = B_0hat k (where E_0 and B_0 are positive constants), then

A charged particle is moved along a magnetic field line. The magnetic force on the particle is

A moving charged particle q travelling along the positive X-axis enters a uniform magnetic field B. When will the force acting on q be maximum?

If a positively charged particle is moving as shown in the figure, then it will get deflected due to magnetic field towards

A positively charged particle moving along x-axis with a certain velocity enters a uniform electric field directed along positive y-axis. Its

The magnetic field exists along negative x-axis and electric field exists along positive x-axis. A charged particle moves with a velocity inclined at an angle (theta) with vertical in (x-y) plane. What will be the correct diagram of the helical path?

A positively charged particle, having charge q, is accelerated by a potential difference V. This particle moving along the x-axis enters a region where an electric field E exists. The direction of the electric field is along positive y-axis. The electric field exists in the region bounded by the lines x=0 and x=a. Beyond the line x=a (i.e., in the region xgta ), there exists a magnetic field of strength B, directed along the positive y-axis. Find a. at which point does the particle meet the line x=a . b. the pitch of the helix formed after the particle enters the region xgea. (Mass of the particle is m.)

In a certain region of space, there exists a uniform and constant electric field of magnitude E along the positive y-axis of a coordinate system. A charged particle of mass m and charge -q (qgt0) is projected form the origin with speed 2v at an angle of 60^@ with the positive x-axis in x-y plane. When the x-coordinate of particle becomes sqrt3mv^2//qE a uniform and constant magnetic. field of strength B is also switched on along positive y-axis. x-coordinate of the particle as a function of time after the magnetic field is switched on is

In a certain region of space, there exists a uniform and constant electric field of magnitude E along the positive y-axis of a coordinate system. A charged particle of mass m and charge -q (qgt0) is projected form the origin with speed 2v at an angle of 60^@ with the positive x-axis in x-y plane. When the x-coordinate of particle becomes sqrt3mv^2//qE a uniform and constant magnetic field of strength B is also switched on along positive y-axis. Velocity of the particle just before the magnetic field is switched on is