no it is not applicable to any of the p-n junction diode.Since p-n junction diode is a semi conductor it is not applicable.U can take any semi conductor for example............
If you mean JFET, it is because the gate junction is reverse biased.
The resistance of a forward biased pn junction is zero.
It depends on the voltage applied it can be zero to a very finite value. by knowing current and using Boltzmann constant the impedance can be found. Answer: Typically: 700 Ohms when Forward Biased and >2000 Ohms when Reverse Biased.
Yes.
Yes, Ohms law is applicable in altering current.
because they have a proportional relation
The diode is neither shorted nor open. It is a zener diode and it is conducting in both directions. If it were truly shorted, it would read closer to zero ohms in both directions.
The simple solution if you are in the consumer repair business is to test it with an ohmmeter. Set the meter scale to x1. Connect the test leads to the diode and it will read either 10 ohms for a silicon diode or no reading. Reverse the lead connections and it must now read the opposite of the first two parameters. If you don't have about ten ohms in either connection then the diode is open. If you have 10 to 100 ohms in both connections then the diode is shorted or leaking. If you have no ten ohms in either connection then the diode is "open. Germanium diodes will read about 2-3 ohms on the flow side and ma show a little meter movement on the reverse connection.
If you are testing in a ciruict it could be caused by almost anything (e.g. a capacitor). If you are testing the diode by itself then you probably have an open diode. Normally when testing foreward biased the diode should read .6 ohms and when testing reverse biased it should read 1.2k ohms. ...cont. Yeah if you're dead testing the diode with an ohmmeter and its giving you an infinite reading, you have a blown diode.
Take a good 100 watt amplifier. Don't look for one with an output impedance of 4 ohms. All amps have output impedances of less than 0.5 ohms, because we use voltage bridging and not power matching.
When an ohm meter is connected to a diode in a forward-biased direction, it should read a low resistance value, typically close to zero ohms. This indicates that the diode is conducting current, allowing the flow of electricity through it. If the ohm meter is connected in reverse bias, it will typically show a very high resistance or infinite resistance, indicating that the diode is blocking current.
Temperature. Ohms law is applicable to measure resistance of an element at constant temperature only.