A: Nobody can answer that. It depends on the diode, battery on the meter, scale of the meter. It should never read zero or close to zero ohms and reversing the lead it should just be close to open but it may read some hi k ohms. A meter test is just to find shorted diodes and extremely leaking diode.
characteristics of forward biased
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.
light up when forward biased
A nonconducting diode is biased in the reversed direction (reverse polarization).
Yes
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.
when a diode is forward biased it conducts current
characteristics of forward biased
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 approximate voltage across the forward-biased base-emitter junction is 0.7 volts.
Connect the positive lead of the tester to the anode of the diode and the negative lead to the cathode. If the tester displays a voltage drop or a forward bias reading, the diode is forward biased and the anode is positive. If the tester displays an OL or reverse bias reading, the diode is reverse biased and the anode is negative.
light up when forward biased
0.7 The voltage across a silicon diode when it is forward biased should be greater than or equal (>=) 0.7volts.
It depends on the particular LED. Some of them emit infrared light. But, yes, emission occurs when forward-biased.
A forward-biased diode has a positive DC on its anode with respect to its cathode.
acts like a normal diode in forward biased condition
A nonconducting diode is biased in the reversed direction (reverse polarization).