electric charges and fields and capacitance

Question 1

torque is minimum at angles?

Answer 1

180 , 0

Question 2

torque experiences unstable equilibrium at

Answer 2

180

Question 2

torque is maximum at angles?

Answer 2

90

Question 2

as theta increases from 0 -180 what is the variation of torque?

Answer 2

first increases, becomes maximum then decreases and becomes 0

Question 3

torque experiences stable equilibrium at

Answer 3

0

Question 4

potential energy of dipole?

Answer 4

U=-PEcosθ

Question 5

electrical potential unit?

Answer 5

V=J/C

Question 6

potential energy of a system of two point charges

Answer 6

kQq/r12

Question 7

capacitance unit?

Answer 7

I FARAD or COLOUMB/VOLT

Question 8

potential energy formula?

Answer 8

1/2CV^2 OR 1/2 QV

Question 9

capacitance in series formula

Answer 9

1/C1 + 1/C2 + 1/C3…….

Question 10

capacitance in parallel formula

Answer 10

C1+C2+C3……Cn

Question 11

Capacitance of a capacitor formula

Answer 11

C=ke.A/d

Question 12

what is dielectric constant ?

Answer 12

defined as the ration of force of interaction btw 2 stationary point charges separated by certain distance in air to the force of interaction btw the same two charges by same distance in given medium

Question 13

define electric dipole

Answer 13

2 equal and opp charges separated by a certain distance