Electric Current

•    Electric current is defined as the rate of flow of electric charge. Its SI unit is ampere (A). When one coulomb of charge flows through an electric circuit in one second then the current flowing through the circuit is said to be one ampere.
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Potential Difference and Resistance

•    Electric potential is basically an electric pressure. Electric charges flow only when there is an electric pressure difference called potential difference. Conceptually, electric potential is defined as the work done in moving a test charge from a reference point to a spe .... Read More

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