Electrostatics Flashcards
1
Q
Charge of an electron
A
1.6 x 10^-19
2
Q
Mass of an electron
A
9.11 x 10^-31
3
Q
Mass of a proton
A
1.67 x 10^-27
4
Q
No. of electrons in 1 coulomb
A
6.24 x 10^18
5
Q
Basic formula of charge
A
Q = ne
6
Q
Coulomb’s Law
A
kq1q2/r^2
7
Q
Value of Epsilon naught
A
8.85 x 10^-12 C^2/Nm^2
8
Q
Value of k constant
A
9 x 10^9 Nm^2/C^2
9
Q
Unit of Electric Field
A
Newton/Coulomb
10
Q
Relation between time and electric field
A
√2sm/eE
11
Q
Electric Flux SI unit
A
Nm2/C
12
Q
Electric Field at an axial point
A
4Kqar/(r2-a2)^2
13
Q
Electric Field at an equatorial point
A
2kqa/(r2+a2)^3/2
14
Q
Electric Field due to a ring
A
kqx/(R^2+x^2)^3/2
15
Q
Electric Field at an axial point if r»a
A
4kqa/r^3
