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What is 1 amp in SI units?
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**1 ampere (1 A)** in SI (International System of Units) is defined as:

> **1 ampere = 1 coulomb per second (1 A = 1 C/s)**

This means that if **1 coulomb of electric charge** flows through a wire or circuit in **1 second**, the current is **1 ampere**.

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### In simple words:

If a wire carries **a certain number of electrons** (which make up electric charge) and **that amount is equal to 1 coulomb** moving every **second**, then the **current in the wire is 1 amp**.

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Would you like an easy example or illustration for better understanding?
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