Electrostatics

Question 1

1 Coulomb in C.G.S system is equal to…

Answer 1

1C = 3×10⁹ esu

Question 2

(r cap) equals

Answer 2

(r vector) over (r magnitude)

Question 3

Value and Units of Coulomb’s Constant in M.K.S and C.G.S systems respectively.

Answer 3

k = 9×10⁹ Nm²/C²
k = 1 dyne cm²/esu²

Question 4

Value of Permittivity of Free Space

Answer 4

8.85×10^-¹² C²/Nm²

Question 5

Value of 1 Newton in C.G.S system.

Answer 5

1N = 10⁵ Dyne

Question 6

Coulomb’s force is only valid at distances greater than…

Answer 6

Radii of a nucleus i.e 10^-¹⁵ m

Question 7

Order of Strength of Fg, Fem and Fe

Answer 7

F(e) > F(e.m) >F(g)