Electrostatics

Question 1

The electric force between static charged particles is called?

Answer 1

Electrostatics

Question 2

What is the other name of electrostatics?

Answer 2

Coulomb’s force

Question 3

What is total charge q equal to?

Answer 3

q = ne, e is the elementary charge

Question 4

Coulomb used which apparatus for the study of electric charges?

Answer 4

Torsion balance

Question 5

What is the equation for coulomb’s law?

Answer 5

F = kq1q2/r²

Question 6

What is k equal to?

Answer 6

k = 1/4π€

Question 7

What is the value of €

Answer 7

€ = 8.85×10^-12C²N^-1m^-2

Question 8

What is the value of k?

Answer 8

k = 9×10⁹ Nm²C-²

Question 9

The concept of electric field was proposed by?

Answer 9

Michael Faraday

Question 10

What is the equation for electric field intensity?

Answer 10

E = F/q

Question 12

What is the SI unit of electric field intensity?

Answer 12

NC^-1, Vm^-1

Question 13

What is the relation between electric field intensity, charge and distance?

Answer 13

E = kq/r²

Question 14

What is the equation for Gauss’ law?

Answer 14

Total electric flux = (1/€)Q

Question 15

What is the equation for electric field intensity of infinite sheet of charge?

Answer 15

E = §/2€

Question 16

What is the equation for electric field intensity of two infinite parallel charged plates?

Answer 16

E = §/€

Question 17

What is the equation for force required to move point charge from one point to another?

Answer 17

F = qE

Question 18

What does electrostatic equilibrium means?

Answer 18

To not move the charge in such a way that it produces acceleration

Question 19

What is the formula for potential difference?

Answer 19

∆V = W/q

Question 20

What is the unit of potential difference?

Answer 20

Volt or Joule per coulomb

Question 21

What is the electric field intensity with the relation to potential difference?

Answer 21

E = -∆V/∆r

Question 22

What is the work done in moving a point charge from one point to another point on an equipotential surface?

Answer 22

Zero

Question 23

Is potential a scalar or vector quantity?

Answer 23

Scalar

Question 24

The medium used in capacitor is known as?

Answer 24

Dielectric

Question 25

What is the relation between charge and voltage?

Answer 25

Q ∞ V

Question 25

SI unit of capacitance is?

Answer 25

Farad

Question 26

What is the equation for capacitance?

Answer 26

C = €A/d

Question 27

What is the equation for parallel combination of capacitors?

Answer 27

Ceq = C1+C2+C3….

Question 28

What is the equation for series combination of capacitors?

Answer 28

1/Ceq = 1/C1+1/C2+1/C3…..

Question 29

What is a dipole?

Answer 29

Separation of charges with opposite sign and equal magnitude by the distance d

Question 30

What is the equation for energy stored in a capacitor?

Answer 30

(1/2)€&E²(Ad)

Question 31

How much time it takes for a capacitor to charge to it’s max. Value?

Answer 31

63%

Question 32

What is the equation for time constant?

Answer 32

T = RC