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Why Different Types of resistors are there in the market , when one type can solve all the problum's ?
no dude, % marking is called as tolerance. if a resister marked as 10 ohm +/- 10% means, the true value of the resistor can vary between 9 to 11 ohm. It is not about cheaper or costly. A resistor is chosen of the following terms,
1. the value of the resistor 2. power dissipation rating
The resistors with low current ratings are smaller and the resistance with higher current ratings are bigger.
If you insert low rating resistance in high current path, it will burst out. So one resistance cannot be suitable for all purposes. The guy above you gave an wonderful explanation about the resistors.
You don't deliberately design to require a loose tolerance. But some resistors, such as for use for bias voltages or pull-up, can be a looser tolerance then ones used in a filter, for example. If you aren't concerned about cost, then you would use tight tolerance resistors in all places.Exactly and the ones with tighter tolerance are generally made with better / more expensive materials. What circuit wold someone find themselves saying "I am going to need a resistor with a real loose tolerance in this spot"?
Thanks for great help
i am just before a new bee in electronics and trying to get into it.I have being working as a java programmer from some time and always have a dream to completly understand the software AND HARDWARE so regard to that studying theory's and theory's and constructed some basic kits like LED flasher's smoke alarm ect.. ect... & it's being 1month but even yet i am not able to thing of constructing my own stuff. so what must i do first?
It was done over a hundred years ago in 1909 by Millikan’s oil-drop experiment.i do understand that 1coulomb is = to the charge of 6.24151x10^(18) electrons
so is it possible to trap only 1 electron any how and can we measure the
charge any how ?
You should know something about the basic electronic components such as resistors (regular, power), capacitors, (film, ceramic, electrolytic), transistors (NPN bipolar, PNP bipolar, N-MOSFET, P-MOSFET), diodes (small signal, power), inductors and transformers, to get started in electronics.is that necessary to understand the differences between the different subtypes in all type of electrical components like there are number of subtypes in transistor and ect ect..?
You should know something about the basic electronic components such as resistors (regular, power), capacitors, (film, ceramic, electrolytic), transistors (NPN bipolar, PNP bipolar, N-MOSFET, P-MOSFET), diodes (small signal, power), inductors and transformers, to get started in electronics.
Wikipedia is a good place to start.