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JEE PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES
1
Medium
1 of 1
Analyzing
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A positively charged disc is placed on a horizontal plane. A charged particle is released from a certain height on its axis. The particle just reaches the centre of the disc. Select the correct alternative.
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Correct option: C
Total potential energy of the particle first decreases, then increases
Option C is correct because the total potential energy of the particle first decreases as it approaches the disc due to electrostatic attraction, then increases as it gets closer to the center due to increasing repulsion.
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Reason:- At any point, there is only one direction of electric field. Statement-I: A positive point charge is brought in an electric field, the electric field at neary by point will increase
Statement-II: Electric field produced by charge may favour the existing electric filed Two particles having equal mass and charge
are separated by a distance The force(s) they
experience is (are) Statement-I: No 2 electric lines of force can intersect each other
Statement-II: tangent at any point of electric line of force gives the direction of electric field A force of is acting between two charges in air if the space between them is completely filled with glass , then the new force will be …… An electron is placed at centre of a conducting sphere of radius 0.2 metre having charge coulomb. The force of on the electron is ________ N