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JEE PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES
1
Medium
1 of 1
Understanding
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Which of the following statements is/are correct?
I. For practical purposes, the earth is used as a reference at zero potential in electrical circuits.
II. The electrical potential of a sphere of radius with charge uniformly distributed on the surface is given by .
III. Work done in carrying a point charge from one point to another in an electrostatic field depends on the path along which the point charge is carried.
I. For practical purposes, the earth is used as a reference at zero potential in electrical circuits.
II. The electrical potential of a sphere of radius with charge uniformly distributed on the surface is given by .
III. Work done in carrying a point charge from one point to another in an electrostatic field depends on the path along which the point charge is carried.
View answer and explanation
Correct option: A
I and II only
Option A (I and II only) is correct because the earth is a zero potential reference, and the potential of a charged sphere is given by the formula, but electrostatic fields are conservative.
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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