Face to Face Resistance
You have two samples, one of silicon dioxide, the other of polimide. The size of the samples is 1 mm squared, by 1 mm long. What is the resistance from face to face?
———- from Dave Engle of Marshalltown, IA
It depends on the maximum voltage that could be impressed across the material. If the sample were gold plated, then the capacitance could be considerable. And, if we’re talking alternating current here and I assume we are, then we’d have to worry about inductance. I don’t know about you, but I hate inductance. It ruins everything. How many times have I described a perfectly workable circuit, only to find when it’s off the schematic diagram and onto a breadboard that inductance crept in and changed all the parameters? Just say no to alternating current. Edison was right. Direct is best. Tesla was insane. I know that now.
It depends on the maximum voltage that could be impressed across the material. If the sample were gold plated, then the capacitance could be considerable. And, if we’re talking alternating current here and I assume we are, then we’d have to worry about inductance. I don’t know about you, but I hate inductance. It ruins everything. How many times have I described a perfectly workable circuit, only to find when it’s off the schematic diagram and onto a breadboard that inductance crept in and changed all the parameters? Just say no to alternating current. Edison was right. Direct is best. Tesla was insane. I know that now. 