Question Answers

Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > 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 3–√mv2/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 3–√mv2/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

A charged cork ball of mass m is suspended on a light sting in the presence of a uniform electric field as shown in fig. When E=(Aiˆ+Bjˆ)NC−1 In a certain region of space the ball is in equilibirum at θ. Find (a) the charge on the ball and (b) the tension in the string. Where A and B positive numbers