What is the difference between diode and resistors?

Answer 1

the resistance of a diode is .4 ohms is made of tantalum or .7 ohms if made of silicon.

ANSWER: THE RESISTANCE OF A DIODE IS SIMPLY V/I the impedance however is defines by Boltzmann constant

Answer 2

A diode allows current to only flow in one direction. A resistor is essentially a load where higher resistance reduces current flowing in a circuit based on ohms law which says Voltage = Current x Resistance. So if Voltage remains constant and resistance increases, Current decreases.

Answer 3

In a way, yes. Every component has resistance, amongst all of its other attributes. In the case of a diode, resistance is very complex because it depends on the voltage applied to the diode.

When analyzing a circuit, it can be useful to calculate the resistance of a diode. For instance, if you had a diode that had a forward current of 1 milliampere at 0.7 volts, you could easily say, using Ohm's law, that the diode's resistance was 700 ohms. Just be careful, however, because that is not a linear calculation - it is only a state calculation. If the diode had 2 milliamperes of current, you could not say that its voltage was 1.4 volts - it would more probably be about 0.75 volts, making the dynamicresistance of the diode 375 ohms, instead of 700 ohms.

Another answer:

No. A diode is a device that allows current to pass through it in only one direction. Each diode has its own characteristics, including maximum forward current and voltage, and maximum reverse current and voltage. The above explanation is useful, because it highlights that you need to take everything into account when understanding what a particular component, such as a diode or a transistor, does.