Hello Forum,
I have two questions to pose:
1) for a metallic object, it depends on its shape. If I had a sphere of surface area A1, its capacitance C1, in cgs, is equal to its radius R.
If I could change the shape of the sphere, while maintaining the same
surface area, A2=A1, what shape would I turn the sphere into to
increase its capacitance C2? Would I want to create spacing, corners?
A single conductor has its own capacitance which is the ability, for a
given voltage difference applied to it, to store electric charge. The
fact that we always see two conductors is because the presence of the
second conductor makes the capacitance of the first conductor
increase. Is that correct?
What if we had a parallel plate capacitor made of two plates with
different surface area :A1>A2.
Would the capacitor have the same, bigger, smaller capacitance than
the case where A1=A2?
2) Inductance: for what I know, inductance is a geometrical factor too
that L expresses amount of the resistance (reactance) to time
changes in current. The faster the current change and the bigger L,
the bigger the resistance (reactance).
How can we have an inductor with infinite inductance?
What does it mean "zero reluctance to the magnetic flux"?
Thanks
Antennaboy
I have two questions to pose:
1) for a metallic object, it depends on its shape. If I had a sphere of surface area A1, its capacitance C1, in cgs, is equal to its radius R.
If I could change the shape of the sphere, while maintaining the same
surface area, A2=A1, what shape would I turn the sphere into to
increase its capacitance C2? Would I want to create spacing, corners?
A single conductor has its own capacitance which is the ability, for a
given voltage difference applied to it, to store electric charge. The
fact that we always see two conductors is because the presence of the
second conductor makes the capacitance of the first conductor
increase. Is that correct?
What if we had a parallel plate capacitor made of two plates with
different surface area :A1>A2.
Would the capacitor have the same, bigger, smaller capacitance than
the case where A1=A2?
2) Inductance: for what I know, inductance is a geometrical factor too
that L expresses amount of the resistance (reactance) to time
changes in current. The faster the current change and the bigger L,
the bigger the resistance (reactance).
How can we have an inductor with infinite inductance?
What does it mean "zero reluctance to the magnetic flux"?
Thanks
Antennaboy