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प्रश्न
What do you understand by the term current? State and define its S.I. unit.
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उत्तर
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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संबंधित प्रश्न
Figure. below shows two conductors A and B. Their charges and potentials are given in diagram. State the direction of (i) flow of electrons and (ii) flow of current, when both the conductors are joined by a metal wire.
0.7 C charges passes through a cross-section of a conductor in 7 s. Find the current.
True or False – If False give the correct answer
Electron flow is in the same direction to conventional current flow.
State whether true or false. If false, correct the statement.
The anode in electrolyte is negative.
