One volt is defined as the electric potential difference between two points in a circuit when one joule of energy is used to move one coulomb of electric charge between those points.
Here's a more detailed explanation:
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Definition: 1 Volt (V) = 1 Joule (J) / 1 Coulomb (C)
- This means that if you have a potential difference of 1 volt, it takes 1 joule of energy to move 1 coulomb of charge from one point to another.
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Analogy: Think of it like water flowing through a pipe. The volt is like the pressure (the "push") that forces the water (charge) through the pipe.
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Ohm's Law Connection: Volt is also related to current (Amperes) and resistance (Ohms) by Ohm's Law:
- Formula: V = I R (Volts = Amperes Ohms)
- This means 1 volt is also the potential difference across a conductor when a current of 1 ampere flows through a resistance of 1 ohm.
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Practical Examples:
- A typical AA battery provides 1.5 volts.
- Household electricity in many countries is around 120 volts or 240 volts.
In summary, one volt is a unit of electrical potential difference that represents the amount of energy required to move a unit of electric charge between two points. It is also related to current and resistance through Ohm's Law.
