Homework Statement
A rule of thumb used to determine the internal resistance of a source is that it is the open-circuit voltage divided by the short-circuit current. Is this correct? Why or why not?
thx for any help
I thought that I could solve this problem by integration. I can divide two spheres to small circular plates as parallel to each other and consider them as parallel plates. Then, i can add them up. It ain't difficult, but it requires calculus knowledge.
the capacitance of two metal sphere system
Homework Statement
What is the capacitance of the two metal sphere system.
*The question has been attached shematically. All the variables are given in the attached file, there is no missing variable.
thx for any help.
"water" as a dielectric in capacitors
Homework Statement
Why do you think water is not commonly used as a dielectric in capacitors?
K=80.4
*K=dielectric constant for water
thx for any help