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JEE PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES
1
Medium
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Understanding
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Assertion : Total flux through a closed surface is zero if no charge is enclosed by the surface.
Reason : Gauss law is true for any closed surface, no matter what its shape or size is.
Reason : Gauss law is true for any closed surface, no matter what its shape or size is.
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Correct option: B
Both assertion and reason are true, but reason is not the correct explanation of assertion
Option B is correct because both the assertion and reason are true, but the reason doesn't directly explain why the flux is zero when no charge is enclosed.
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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