Open-circuit voltage (abbreviated as OCV or VOC ) is the difference of electrical potential between two terminals of a device when disconnected from any circuit. There is no external load connected. No external electric current flows between the terminals. Alternatively, the open-circuit voltage may be thought of as the voltage that must be applied to a solar cell or a battery to stop the current. It is sometimes given the symbol Voc. In network analysis this voltage is also known as the Thévenin voltage.
The open-circuit voltages of batteries and solar cells are often quoted under particular conditions (state-of-charge, illumination, temperature, etc.).
The potential difference mentioned for batteries and cells is usually the open-circuit voltage. The open-circuit voltage is also known as the electromotive force (emf), which is the maximum potential difference when there is no current and the circuit is not closed.
The opposite of an open circuit is a "short circuit".
To calculate the open-circuit voltage, one can use a method similar to that below.
Homework Statement
Find the open circuit voltage across A & B:
Homework Equations
V = IR
The Attempt at a Solution
If I0 is the current leaving the voltage source and passing through the first resistor, I1 is the current through the left resistor in parallel, and I2 through...
VS = 10 volts
R1 = 165 ohms
R2 = 146 ohms
R3 = 294 ohms
http://users.on.net/~rohanlal/elec.jpg
what is the value of the open circuit voltage, VOC, in volts ?
my attempt:
I'm not sure where to begin as I don't know whether r2 and r3 are in series or parallel.
Hello Experts, :)
to cause and open circuit mechanically/electrically, i would use a coil type of switch. I wonder what are some of the electronic ways to effect an open a circuit?
thank you for reading and have a nice day.
best regards
Ramone :)
Hello to you all,
I have seen something at a friends work place and did not understand how it worked? after asking I didn’t get an answer that satisfied me.
The company produce voltage detectors and test them on a single phase 50kV transformer. One output post is connected to Earth and the...
A bar magnet is being pulled away from one end of a solenoid, eg N pole of magnet nearest to solenoid. I've learned that the current induced in a solenoid is such that the magnetic field it creates opposes the change in flux through the loop. But what if the solenoid is in an open circuit? Will...
2 terminals of a battery are connected to 2 50k ohms resistor...but in open circuit.
i.e -
______
---------/\/\/\/\/\/---|______|--------/\/\/\/\/\/\/\/-----
______
the...
Homework Statement
What is the difference between an open circuit and a short circuit?
Open circuit has no current, so does that mean any resistor in series with it, has no current ,so it can be ignored for analysis( v=ir so 0 current means 0 V) for finding let's say the Thevenin...
Three bulbs
A circuit is made of two 1.5 volt batteries and three light bulbs as shown in Figure 19.57. When the switch is closed and the bulbs are glowing, bulb 1 has a resistance of 9 ohms, bulb 2 has a resistance of 44 ohms, bulb 3 has a resistance of 28 ohms, and the copper connecting wires...
What happens when you sandwich an uncharged capacitor between two charged capacitors?
1. Just as a piece of Styrofoam can have a static electric charge, a capacitor's dielectric material can be charged, without the requirement of capacitor plates.
2. Given 3 equal pieces of dielectric...