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Question
What do you understand by the term current? State and define its S.I. unit.
Solution
Current is the rate of flow of charge across a cross-section. It is a scalar quantity.
Its S.I. unit is ampere (coulomb per second).
If 1 ampere current flows through a conductor, it means that 6.25 x 1018 electrons pass in 1 second across that cross-section of conductor.
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RELATED QUESTIONS
Draw a neat and labelled diagram of a simple voltaic cell showing clearly the direction of flow of conventional current and direction of flow of electrons.
Differentiate between:
Flow of electron and flow of conventional current.
True or False – If False give the correct answer
Electron flow is in the same direction to conventional current flow.
milli ampere: micro ampere : : 10-3A : ______.
The direction opposite to the movement of electron is called ______ current.
Problems for practice:
If 50 coulomb of electric charge flows through a wire in five minutes, calculate the current in the wire?
