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Because they're very small components. It's easier to mark them with coloured bands, then you can 'decode' the bands according to the internationally agreed colour-coding system.
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What happens to the value of a resistor when it goes bad?
we can say that a resistor gone bad if 1. its resistance is different than that printed by the color code 2. doesn't conduct any current Resistors normally will burn open. Carbon resistors almost always do this, while wireound resistors can lower in resistance. They may still allow current flow, but it will not be correct.
What is the advantage of film resistors over carbon resister?
Film resistors have lower noise than carbon resistors.
What is your observation of resistors in series?
I observe that the total effective resistance of several resistors in series is the sum of the individual resistance values of the individual resistors.
In a circuit the voltage across all resistores is the same?
It depends upon the connection of the resistors, if the resistors are connected in parallel then the voltage is same where as in case of resistors connected in series the voltage is different across different resistors.
What happens to the voltage values of other resistors when a short occurs in one of them?
If a short occurs in a resistor in series with other resistors, the voltage drops across the other resistors will increase. If a short occurs in a resistor in parallel with other resistors, the voltage drops across the other resistors will decrease, to zero.
Why do you think that the color was established for very small resistors?
-- I think one reason was that it's so difficult to print numbers on them or to read such numbers. -- I think another reason is that if the resistor gets scraped along one side, printed numbers or letters could be scraped off and completely lost, but color bands are still readable on the other side.
What are IPDs?
IPD is an abbreviation for integrated passive device, which contains capacitors, resistors, inductors, and other components on a printed-circuit board.
Numbers printed at the bottom of a check are called?
what are the numbers at the bottom of a check called
Does it matter which way a emitter resistor is installed?
A resistor is not polarity sensitive, and may be installed in either direction. That's why resistors don't have pluses ( + ) or minuses ( - ) printed on them.
What happens to the value of a resistor when it goes bad?
we can say that a resistor gone bad if 1. its resistance is different than that printed by the color code 2. doesn't conduct any current Resistors normally will burn open. Carbon resistors almost always do this, while wireound resistors can lower in resistance. They may still allow current flow, but it will not be correct.
Do racing cars have numbers printed on them?
Yes! Of cause they do!
What are those materials of resistors?
most of the resistors commonly used are carbon resistors
How do they make radios?
Most radios begin with a printed circuit board- metallic copper printed onto a fiberglass board- this will be most of the wiring. A computer controlled machine "stuffs" the holes in the circuit board with transistors, capacitors and resistors, and they are all soldered in place at one time.
Do number formats affect how numbers look on screen when printed?
yes
What printed material would you use for telephone numbers?
A telephone book.
What is carbon composition resistors?
Carbon composition resistors are resistors that are made with carbon or graphite mixed with a binding material. It's one type of resistors among several. There are also carbon-film resistors and metal-film resistors. Out of all the resistors, carbon-film resistors have the greatest tolerances and changes to temperature fluctations. Thus, they are used in applications where precision isn't critical and where temperature will not change drastically.
How do you find the resistance of a series circuit with n identical resistors?
The total resistance of resistors in series is simply the sum of the resistance values of those resistors. If the resistors are identical, then you can multiply the resistance of one of them by the number of resistors in the circuit.
