Motion of charged particle in uniform electric field - Practice Questions & MCQ

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

A particle of mass m and charge q is released from rest in uniform electric field. If there is no other force on the particle, the dependence of its speed v on the distance x travelled by it is correctly given by (graphs are schematic and not drawn to scale )

An electron moving with the speed of  m/s is shot parallel to the electric field of intensity . The field is responsible for the retardation of the motion of electrons. Now evaluate the distance travelled by the electron before coming to rest for an instant (mass of  charge )

A mass of 1g carrying charge q falls through a potential difference V. The kinetic energy acquired by it is E. When a mass of 2g carrying the charge q falls through a potential difference V. What will be the kinetic energy acquired by it?

Direction :   In the following question, a statement of Assertion ( A ) is followed by a statement of reason (R). Mark the correct choice as 

Assertion : If a charge enters in electric field  then it must move in the direction of electric field .

Reason : Force on the charge is always in the opposite direction of electric field .

A charged particle of mass m and charge +Q is balanced in the air due to an electric field direction in a vertically upward direction the value of the magnitude of the electric field is:

A particle having charge Q and mass m rests at A and in time t reaches point B. If the potential difference between point A and B is $\Delta V$ then velocity at point B depends upon $\Delta V$ as:

If the motion of the charged particle is accelerated then it produces-