All Questions
Tagged with electricity conductors
159
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Charging a capacitor
Below is an excerpt from a physics textbook:
One common way to charge a capacitor is to connect these two wires to opposite terminals of a battery. Once the charges $Q$ and $-Q$ are established on ...
- 103
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Migration of an ion in a non-conductive medium
Someone asked me why, when performing DNA electrophoresis we need to put the gel inside a conducting buffer. Couldn't we just run it in distilled water?
My answer was that if we had distilled water ...
- 63
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Why don't the positive charges in a conductor move?
Charge is carried by electrons moving. The protons are always stationary.
The answer I found online is the protons are stuck in the nucleus so they can't move ("strong nuclear force"). But why can't ...
- 2,009
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Why is stainless steel a poor conductor of electricity?
I recently had a metal plate put in my shoulder and was wondering why stainless steel isn't a good conductor (At least I hope it isn't). Does the alloy just lack free electrons? Why is that?
user24082
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Why does electricity need wires to flow?
If you drop a really heavy ball the ball's gravitational potential energy will turn into kinetic energy.
If you place the same ball in the pool, the ball will still fall. A lot of kinetic energy will ...
- 2,009
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9
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Why is the charge transferred by electrons and not by protons?
Charges are transferred by electrons which we all know. But why can't it be transferred by protons? Well, I searched on Google where I found similar questions already being asked on many sites. ...
- 2,565
4
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3
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How can I calculate the wave propagation speed in a copper wire?
First of all: I am a computer science student, so I don't have much knowledge of physics. So please keep your answers simple.
I recently learned something about circuit design and its problems (...
- 913
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How to know what materials are good conductors of electricity?
I'm not asking a question like "Is the wood conductive?". No. I'm asking what properties do they have to have to be good conductors. Theoretically I mean.
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Is a signal traveling through fiber faster than a signal traveling through copper?
Does the transmission medium affect the speed of a signal? For instance does light traveling through a fiber cable get a bit from $A \implies B$ faster than copper can transmit a bit the over the same ...
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