What is Open Circuit Voltage?
What is Open Circuit Voltage?
Open Circuit Voltage Definition
Open circuit voltage is defined as the voltage between two terminals when no external load is connected, also known as Thevenin Voltage.
No Current Flow
In an open circuit, no current flows because the circuit is not complete.
Finding Open Circuit Voltage
Measure the voltage across the open terminals to determine the open circuit voltage.
Solar Cells and Batteries
Open circuit voltage in solar cells and batteries depends on factors like temperature and state of charge.
I0 = Dark saturation current
IL = Light generated current
N = Ideality factor
T = Temperature
k = Boltzmann constant
q = Electronic charge
Testing with Multimeter
Use a digital multimeter to test open circuit voltage by measuring across the battery terminals without a load.
