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(a) Define the term ‘coulomb’. (b) State the relationship between the electric current, the charge moving through a conductor and the time of flow.

Calculate the charge passing through an electric bulb in 20 minutes if the value of current is 200 mA.


Coloumb the unit of charge
if 1 coloumb of charge passing through any cross section of unit area in 1 second then the amount of current flowing is called 1 ampere
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