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JEE PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES
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Medium
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Application
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Two particles, each having a mass of and charge , stay in limiting equilibrium on a horizontal table with a separation of between them. The coefficient of friction between each particle and the table is the same. Find the value of this coefficient
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Correct option: B
0.18
Option B (0.18) is correct because the coefficient of friction is found by equating the electric force and the frictional force in limiting equilibrium.
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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