Electric Charges and Fields

properties of charges

Quantised

conserved

independent of speed

additive

State Coulomb’s Law

F= Kq1q2/r²

What is permitivity?

ability of medium to allow or restrict electric field to pass through it.

Value of Epsilon o

8.85 ×10^-12

K value

9 × 10²

what is Rel permitivity?

E_r= F_v/F_m

Limitations of Coulomb’s Law?

valid for static charges

valid for point charges

central force

medium dependent force

Define Electric Field. Is it scalar or vector?

effect produced by charges particle around it. It is vector quantity.

give formula of E?

E= F/q Kq/r²

EFL properties

continuous

never intersect

+to-

never form closed loop

first subjective then objective

Dipole moment formula

P=2aq

P at eq pont

P_eq= KP/x³

P at ax

P_ax= 2Kp/X³

Direction of electric field at axial point in dipole is ____ the dipole moment and ____ the dipole moment at eq point

along, opposite

Torque formula

PEsintheta