Electric field intensity at a point is i...

Electric field intensity at a point is inversely proportional to cube of its distance due to

a point charge

an infinite line charge

an electric dipole

an infinite plane sheet of charge

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Define electric field intensity at a point.

Electric field intensity at a point varies as r^(-3) for

STATEMENT -1: Electric field at a point is always inversely proportional to (distance )^2 . STATEMENT -2: Electric field due to a line charge at a point inversely proportional to distance .

STATEMENT-1 : Electric field at a point due to an infinite sheet of uniformly distributed charge is independent of distance between the point from the sheet. STATEMENT-2 : Electric field at a pont due to an uniformly distributed long charged rod is inversity proportional to distance between the point and rod. STATEMENT-3 : Electric field at a point due to an electric dipole is inversely proportional to the cube of distance between point and centre of dipole.

Electric field due to point charge

Assertion: On going away from a point charge or a small electric dipole, electric field decreases at the same rate in both the cases Reason: Electric field is inversly proportional to square of distance from the charge or an electric dipole.

Electric field intensity at a point B due to a point charge Q kept at a point charge Q kept at point A is 24 NC^(-1) , and electric potential at B due to the same charge is 12 JC^(-1) . Calculate the distance AB and magnitude of charge.

Assertion: Electric field intensity at a point due to a positive charge is always opposite in direction to electric field intensity due to negative charge, and it is independent to locațions of charges. Reason: The direction of electric field due to a point charge is away from the positive charge and towards the negative charge along the line joining the point charge and location where the electric field is to be calculated.

NIKITA PUBLICATION-ELECTROSTATICS-Multiple Choice Questions

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