Why is the voltage in an ideal battery equal to that in an open circuit?

[Mango12]

question: referencing ohm's law, why is the voltage in an ideal battery equal to that in an open circuit?

I know ohm's law, and I know that an ideal battery has the same voltage no matter what it's connected to, but what does that have to do with an open circuit?

 

[I like Serena]

question: referencing ohm's law, why is the voltage in an ideal battery equal to that in an open circuit?

I know ohm's law, and I know that an ideal battery has the same voltage no matter what it's connected to, but what does that have to do with an open circuit?

Hi Mango12! ;)

A real battery loses some of its voltage in a closed circuit.
Putting a load on real battery has its effect.
However, even a real battery behaves like an ideal battery if there's no load on it - that is, if we have an open circuit.