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JEE PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES
1
Medium
1 of 1
Understanding
+4 | -1
Consider a conductor with a spherical cavity in it. A point charge is placed at the centre of cavity and a point charge is placed outside conductor.
Statement-1: Total charge induced on cavity wall is equal and opposite to the charge inside.
Statement-2: If cavity is surrounded by a Gaussian surface, where all parts of Gaussian surface are located inside the conductor, hence
Statement-1: Total charge induced on cavity wall is equal and opposite to the charge inside.
Statement-2: If cavity is surrounded by a Gaussian surface, where all parts of Gaussian surface are located inside the conductor, hence
View answer and explanation
Correct option: A
Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1
Option A (Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1) is correct because the electric field inside a conductor is zero, leading to induced charge on the cavity wall.
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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
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