A uniform electric field E is present horizontally along the paper throughout region but uniform magnetic field B_(0) is present horizontally (perpendicular to plane of paper in inward direction) right to the line AB as shown.A charge particle having charge q and mass m is projected vertically upward and crosses the line AB after time t_(0) .Find the speed of projection if particle moves after t_(0) with constant velocity.(given qE = mg)

In the fig shown XX represents a vertical plane perpendicular to the plane of the fig. To the right of this plane there is a uniform horizontal magnetic field B directed into the plane of the fig. A uniform electric field E exists horizontally perpendicular to the magnetic field in entire space. A charge particle having charge q and mass m is projected vertically upward from point O. It crosses the plane XX after time T. Find the speed of projection of the particle if it was observed to move uniformly after time T. It is given that qE = mg.

A uniform magnetic field exists perpendicular to the plane of the figure and a uniform electric field exists in the plane of the figure in positive y direction. A charged particle, when projected along xy plane moves along the path shown in the figure. Is the particle positively charged or negatively charged?

A charge particle of mass m and charge q is projected with velocity v along y-axis at t=0. Find the velocity vector and position vector of the particle vec v (t) and vec r (t) in relation with time.

A positively charged particle moving due east enters a region of uniform magnetic field directed vertically upwards. The particle will

In a certain region uniform electric field E and magnetic field B are present in mutually opposite directions. At the instant t=0 , a particle of mass m carrying a charge q is given velocity v_(0) at angle theta , with the y- axis, in the yz plane. The time after which the speed of the particle would be minimum is equal to

A positivively charged particle moving due east enters a region of uniform magnetic field directed vertically upwards. The particle will

Consider the motion of a chrged particle in a uniform magnetic field directed into the paper. If velocity v of the particle is in the plane of the paper , the charged particle will describe a

A particle of mass m and charge q enters a region of magnetic field (as shown) with speed v at t = 0. There is a region in which the magnetic field is absent as shown. The particle after entering the region collide elastically with a rigid wall. Time t after which the velocity of particle become antiparallel to its initial velocity is -

In a certain region of space, there exists a uniform and constant electric field of strength E along x-axis and uniform constant magnetic field of induction B along z-axis. A charge particle having charge q and mass m is projected with speed v parallel to x-axis from a point (a, b, 0). When the particle reaches a point( 2a, b//2 , 0) its speed becomes 2v. Find the value of electric field strength in term of m, v and co-ordinates.