NCERT 3-5 MARKS QUESTIONS: 1) Explain electrification by induction by using a single conductor? 2) State and explain coulombs inverse square law? 3) Write coulombs law in terms of position vectors of qi and qz? 4 Explain gold leaf electroscope? Obtain an expression for resultant force on a charge due to number of charges? 6) Define a) Electric field b) uniform electric field c) non-uniform electric field? 7) Derive an expression for electric field at a point due to a point charge? (8Explain the charge densities? - 9) Obtain an expression for electric field due to system of charges? 0 Derivé an expression for electric field due to continuous distribution of charge? 11) Derive an expression for electric field at a point on the axis of an electric dipole? ( end on position) 12) Derive an expression for electric field at a point on the equatorial line (perpendicu equatorial plane) of an electric dipole? 13) Derive an expression for torque experienced by an electric dipole kept in a unifor 14) Derive Gauss theorem? 15 Derive an expression for electric flux through the cylinder kept in a uniform elec abonemo
Answers
Answer:
Coulomb's law states that the magnitude of the electrostatic force of interaction between two point charges is directly proportional to the scalar multiplication of the magnitudes of charges and inversely proportional to the square of the distance between them.
It means that if there are two charged bodies one is positively charged and one is negatively charged, then they will attract each other if they are kept at a certain distance from each other. Now if we increase the charge of one body keeping other unchanged, the attraction force is obviously increased. Similarly if we increase the charge of second body keeping first one unchanged, the attraction force between them is again increased. Hence, force between the charge bodies is proportional to the charge of either bodies or both.
It is presented as: F=
4πϵ
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