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JEE PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES
1
Medium
1 of 1
Analyzing
+4 | -1
A charged bead is capable of sliding freely
through a string held vertically in tension. An
electric field is applied parallel to the string, so
that the bead stays at rest at middle of the
string. If the electric field is switched off
momentarily and switched on
through a string held vertically in tension. An
electric field is applied parallel to the string, so
that the bead stays at rest at middle of the
string. If the electric field is switched off
momentarily and switched on
View answer and explanation
Correct option: D
The bead moves downwards with constant
velocity till it reaches the bottom of the string
velocity till it reaches the bottom of the string
Option D is correct. After the field is switched off and then on again, the forces balance, resulting in constant velocity.
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Assertion:- Electric field lines do not cut at any point.
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
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