1
WB JEE 2020
MCQ (Single Correct Answer)
+1
-0.25
As shown in the figure, a point charge q1 = + 1 $$ \times $$ 10-6 C is placed at the origin in xy-plane and another point charge q2 = + 3 $$ \times $$ 10-6 C is placed at the coordinate (10, 0).
In that case, which of the following graph(s) shows most correctly the electric field vector in Ex in x-direction?
In that case, which of the following graph(s) shows most correctly the electric field vector in Ex in x-direction?
2
WB JEE 2020
MCQ (Single Correct Answer)
+1
-0.25
Four identical point masses, each of mass m and carrying charge + q are placed at the corners of a square of sides a on a frictionless plane surface. If the particles are released simultaneously, the kinetic energy of the system when they are infinitely far apart is
3
WB JEE 2020
MCQ (Single Correct Answer)
+1
-0.25
A very long charged solid cylinder of radius a contains a uniform charge density p. Dielectric constant of the material of the cylinder is K. What will be the magnitude of electric field at a radial distance x (x < a) from the axis of the cylinder?
4
WB JEE 2020
MCQ (Single Correct Answer)
+2
-0.5
A pair of parallel metal plates are kept with a separation d. One plate is at a potential + V and the other is at ground potential. A narrow beam of electrons enters the space between the plates with a velocity v0 and in a direction parallel to the plates. What will be the angle of the beam with the plates after it travels an axial distance L?
Questions Asked from Electrostatics (MCQ (Single Correct Answer))
Number in Brackets after Paper Indicates No. of Questions
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