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Electric current is the flow of electric charge through a conductor. It is measured in amperes (A) and represented by the symbol 'I'.
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Voltage: Voltage, or electric potential difference, is the force that pushes electric charges through a conductor. It is measured in volts (V).
Resistance: Resistance is a measure of how much an object opposes the flow of electric current. It is measured in ohms ($\Omega$).
Ohm's Law: Ohm's Law states that the voltage across a conductor is directly proportional to the current flowing through it, given by $V = IR$.