The potential difference between two points in an electrical circuit is measured in

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In this question, we are asked about the unit used to measure the potential difference between two points in an electrical circuit.
Option 1: volts. This is the correct unit for potential difference (voltage). By definition, 1 volt equals 1 joule of energy per coulomb of charge (1 V = 1 J/C), which describes how much energy is transferred per unit of charge as it moves between two points.
Option 2: amperes. Amperes measure electric current, i.e., the rate at which charge flows, not the potential difference between two points. Confusing current with voltage is a common misconception, but they are distinct quantities with different units.
Option 3: coulombs. Coulombs quantify electric charge, not the difference in electric potential between two points. While charge and voltage are related in circuit analysis, Coulombs alone do not describe potential difference.
To summarize, the potential difference is measured in volts, while amperes and coulombs correspond to current and charge, respectively.

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The potential difference between two points in an electrical circuit is measured in

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