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All Equations for Electricity
Current
Rate of flow of electric charge
Charge
Fundamental property of matter (+ or - ).
One coulomb equals the amount of charge that flows in one second when the current is one ampere.
+ and +, - and - repels, - and + attracts
Charge of an Electron
1.6×10-19 C
Mean drift velocity
The average velocity attained by charged particles, such as electrons, in a material due to an electric field, resulting in a net flow of charge.
Key points:
Charges move randomly but overall tend to drift in one direction.
The mean drift velocity (v) is the average of these velocities.