Conductance of 2 bodies: Is it dependent on geometry?

AI Thread Summary
The discussion centers on proving that the charge transfer between two arbitrarily shaped conductors is solely dependent on their geometry. Participants explore the analogy of this scenario to capacitors, noting that the voltages are relative to a reference point, which introduces capacitance between the conductors and that reference. The conversation suggests examining the parallel plate capacitor equation, emphasizing that if current is related only to measurements in meters or square meters, it confirms the geometric dependence. The key takeaway is that the charge transferred is independent of other factors, relying only on the geometry and potential difference. This highlights the fundamental relationship between geometry and electrical conductance in this context.
Arkavo
Messages
31
Reaction score
1

Homework Statement



I have 2 arbitrarily shaped conductors with charge Q1 and Q2 with potetials V1 and V2 respectively. I then short them (connect with a thin metallic thread) now i have to prove that the amount of charge that flows from one to the other is: Only dependent on the geometry of the conductors.

Homework Equations



Does this behave like a capacitor, if so how?
 
Physics news on Phys.org
The voltages are with respect to something. There is capacitance between themselves and that something.
 
yes but how do i prove the original question? that charge transferred is independent of all factors except geometry and potential difference?
 
Perhaps look at the equation for a parallel plate capacitor. In particular the units. If the current depends only on quantities measured in meters or square meters then you've proved it depends on geometry.
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...

Similar threads

Back
Top