The electric field at a point varies as r0 for:
Correct answer: A. A plane infinite sheet of charge
- A. A plane infinite sheet of charge
- B. A point charge
- C. Electric dipole
- D. Line charge of infinite length
Explanation
Option A is correct since there is no relation of the electric field of an infinite plane sheet of charge with distance according to the formula provided by Gauss's law: E = sigma/2 epsilon knot.Option B is incorrect since the electric field for a point charge varies as 1/r^2.Option C is incorrect since the electric field for a dipole varies as 1/r^3..Option D is incorrect since the electric field for an infinite line of charge does not vary as r^0 over large distances.
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Electrostatics describes forces between charges through Coulomb's law, electric fields and field intensity, then uses electric potential to measure energy per unit charge. Capacitors store charge and electrical energy, with capacitance depending on geometry and dielectric material, not simply on the amount of charge present.
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