Current Electricity (physics) – MCQ worksheets with answer + other exercises from Electric Current or Electricity chapter Current Electricity – MCQ Worksheet (with answer) For an electric charge to move from one position to another, there must be a difference between the twopositions ina. electrical conductivity.b. electric potential energy.c. kinetic energy of particles.d. resistance to […]

## Numerical problems on Drift velocity of electrons and electric current-how to solve?

The numerical problems in this post are based on the drift velocity of electrons and electric current. Electric Current is expressed as I = nAve ( see the derivation of electric current and drift velocity equation ) Numerical problems on Drift velocity of electrons and electric current 1 ] A copper wire has a cross […]

## What is the Internal Resistance of cells?

What is the Internal Resistance of cells & how it affects the current flow in a circuit? All electric cells are made of materials that have resistance. The resistance of the cell is called the internal resistance. If a cell with internal resistance is connected to a resistor, the current will flow from the cell. […]

## How to Derive the relationship between Current and drift velocity

So this is the equation describing the relationship between current(I) and the drift velocity(v). Derivation of drift velocity equation