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JEE PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES
1
Medium
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Understanding
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Statement-1: A uniformly charged dise has a pin hole at its centre. The electric field at the centre of the disc is zero.
Statement-2: Disc can be supposed to be made up of many rings. Also electric field at the centre of uniformly charged ring is zero.
Statement-2: Disc can be supposed to be made up of many rings. Also electric field at the centre of uniformly charged ring is zero.
View answer and explanation
Correct option: A
Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1
Option A (Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1) is correct because the electric field at the center of a charged ring is zero, and the disc can be considered as a collection of such rings.
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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