Define : [1 mark e e (1) Electric circuit
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Definition :
- The quantity of charge ( in coloumb ) crossing a point in unit time is called electric current.
Alternative definition :
- The electric current is a flow of elcetric charge in conductor such as metal wire.
Formula :
Here ,
- q = charge expressed in coloumb
- t = time expressed in second
- i = electric current
More about current :
- It is written in Coloumb per second or ampere in SI system .
- Current is a scalar quantity.
- Current may be direct , varying or alternating current.
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