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電荷を使用してジュール（J）をボルト（V）に瞬時に正確に変換

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How to Convert Joules to Volts

Converting joules (J) to volts (V) is a fundamental calculation in physics and electrical engineering. Joules represent energy, while volts represent electric potential or voltage. The conversion requires knowledge of electric charge (in coulombs), as voltage is energy divided by charge. Our free Joules to Volts conversion calculator makes this process quick and easy, providing instant and accurate results for your physics and engineering calculations.

The conversion formula is: V = J / C, where V is the voltage in volts, J is the energy in joules, and C is the electric charge in coulombs. This formula directly relates energy and voltage through electric charge. One volt is defined as one joule per coulomb (1 V = 1 J/C). This means that if 1 joule of energy is associated with 1 coulomb of charge, the voltage is 1 volt.

This conversion is commonly used in various applications: calculating voltage in capacitors and batteries, understanding energy storage in electrical systems, designing electrical circuits and power systems, analyzing battery capacity and energy density, working with electrochemical systems, and performing physics calculations involving energy, charge, and voltage. Knowing how to convert Joules to Volts helps you understand the relationship between energy storage and voltage in electrical systems.

Our calculator takes the joules and electric charge (in coulombs) as inputs, automatically applies the conversion formula, and provides the result in volts. The calculator handles both small values (common in electronics) and large values (common in power systems). Whether you're working with capacitors, batteries, electrochemical cells, or any device that stores electrical energy, our Joules to Volts calculator provides accurate, instant conversions.

Example:

If a capacitor stores 10 joules of energy with a charge of 2 coulombs, the voltage would be: V = 10 J / 2 C = 5 V. For a battery storing 100 joules with 5 coulombs of charge: V = 100 J / 5 C = 20 V. For a system with 50 joules and 10 coulombs: V = 50 J / 10 C = 5 V. For a device with 1000 joules and 100 coulombs: V = 1000 J / 100 C = 10 V.

Frequently Asked Questions

The formula to convert joules (J) to volts (V) is: V = J / C, where V is the voltage in volts, J is the energy in joules, and C is the electric charge in coulombs. One volt is equal to one joule per coulomb (1 V = 1 J/C).
A joule (J) is the SI unit of energy. It is defined as the amount of work done when a force of one newton moves an object one meter in the direction of the force. One joule is also equal to one watt-second, meaning one watt of power for one second.
A volt (V) is the SI unit of electric potential, voltage, or electromotive force. It is defined as one joule per coulomb (1 V = 1 J/C). Voltage represents the electric potential difference between two points in an electrical circuit.
Voltage is the electric potential energy per unit charge, which means it depends on both energy and charge. To convert joules (energy) to volts (voltage), you need to know the electric charge (in coulombs) associated with that energy. The formula V = J / C shows that voltage equals energy divided by charge.
A coulomb (C) is the SI unit of electric charge. It is defined as the amount of charge transported by a constant current of one ampere in one second. One coulomb is approximately equal to 6.242 × 10^18 elementary charges (electrons or protons).
Yes, you can convert volts to joules using the formula: J = V × C, where J is energy in joules, V is voltage in volts, and C is charge in coulombs. This is the reverse of converting joules to volts. For example, a 12-volt battery with 10 coulombs of charge stores 12 V × 10 C = 120 joules of energy.
Yes, our Joules to Volts calculator is completely free to use. No registration or payment is required. Simply enter your joules and charge values and get instant, accurate voltage conversion results.