Battery Voltage Calculator, Formula, Battery Volts Calculation

Battery Voltage Calculator

Enter the values of current, Ib(A) and internal resistance, Rb(Ω) to determine the value of battery voltage, Vb(V).

 Enter Current : A Enter Resistance: Ω Result – Battery Voltage: V

Battery Voltage Formula:

Battery Voltage is a fundamental parameter in electrical engineering and electronics, indicating the potential difference across a battery’s terminals.

It is essential for ensuring proper operation of electrical devices by providing the necessary power output.

The voltage of a battery depends on the internal resistance of the battery and the current flowing through it.

The relationship between these parameters is described by Ohm’s law.

Battery voltage, Vb(V) in volts equals the product of current, Ib(A) in amperes and internal resistance, Rb(Ω) in ohms.

Battery voltage, Vb(V) = Ib(A) * Rb(Ω)

Vb(V) = battery voltage in volts, V.

Ib(A) = current in amperes, A.

Rb(Ω) = resistance in ohms, Ω.

Battery Voltage Calculation:

1. Calculate the battery voltage of a battery with a current of 2 amperes and an internal resistance of 0.5 ohms:

Given: Ib(A) = 2A, Rb(Ω) = 0.5 Ω.

Battery voltage, Vb(V) = Ib(A) * Rb(Ω)

Vb(V) = 2 * 0.5

Vb(V) = 1V.

1. Suppose a battery has an internal resistance of 0.3 ohms, and the battery voltage is 0.9V. Calculate the current flowing through the battery.

Given: Vb(V) = 0.9V, Rb(Ω) = 0.3 Ω.

Battery voltage, Vb(V) = Ib(A) * Rb(Ω)

Ib(A) = Vb(V) / Rb(Ω)

Ib(A) = 0.9 / 0.3

Ib(A) = 3A.

Applications and Considerations:

• Electrical Engineering: Battery voltage calculations are essential for designing and testing electronic circuits.
• Portable Devices: Understanding the voltage capabilities of batteries helps in designing more efficient and long-lasting portable devices.
• Electric Vehicles: Battery voltage is critical for managing the performance and range of electric vehicles.