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Some design engineers that make electronic circuits specify tolerances in the resistors because a resistor that is too out of spec would not operate properly. A resistor with a brown band I believe is within 20%, a black is 10%, and gold is 5%.
So if a resistor is rated at 3000 ohms, depending upon the band, it can vary a certain percentage. Resistors with the gold band I believe are called "precision resistors".
The more "precision" the resistor is, the more it costs. To keep costs low, tolerances are sometimes included to alert the assembler that a precision resistor may not be necessary. For instance if a value of 3000 ohms can be within 20% then a cheap resistor may be used and is not critical in the circuit.
The tolerances are introduced in manufacturing of resistors because practically, we can achieve 100% correct resistance. So, a tolerance range is indicated to make aware the users to select the proper resistor according to their application.
What else can I help you with?
Two resistors are connected in parallel to a battery What must the votlage across these two resistors?
Both resistors will have the voltage of the battery.
What are photo resistors?
photo resistors, or light dependent resistors, are devices with variable resistance, that cahnges depending on how much light is hitting the device
Where are variable resistors found?
dimmer swithces for lights usually contain variable resistors
What is your observation of resistors in parallel resistors?
RParallel = 1 / Summationi=1toN (1 / Ri)
What does wrist grounding strap contain?
resistors
What is carbon composition?
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.
Why experimental calculations shoul use measured values of resistors rather than color coded values?
Experimental calculations should use measured values of resistors, because actual resistors can deviate slightly from their color-coded values due to manufacturing tolerances. Using measured values ensures more accurate results in experiments where resistor values play a critical role.
Why are measured values of resistors different from the stated values?
1: Resistors are manufactured with different tolerances, ie they're allowed to be both a bit above as well as below the target value. 2: If you're using a simple multimeter there's no telling how close the measured value is to the real value anyhow, once that you get down to the decimal places.
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.
What are the types of carbon film resistors?
Carbon film resistors come in several types, primarily differentiated by their construction and performance characteristics. The most common types include standard carbon film resistors, which offer good stability and low noise, and high-precision carbon film resistors, designed for applications requiring tighter tolerances. Other variations include low-temperature coefficient (LTC) carbon film resistors, which minimize changes in resistance with temperature, and power carbon film resistors, built to handle higher power ratings. Each type is suited for different applications based on factors like accuracy, stability, and power handling capabilities.
What are those materials of resistors?
most of the resistors commonly used are carbon resistors
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.
What is the advantage of film resistors over carbon resister?
Film resistors have lower noise than carbon resistors.
What are Resistors wired in series?
Resistors are wired in series when they are connected in a line. The current flows through the resistors one after the other.
Two resistors are connected in parallel to a battery What must the votlage across these two resistors?
Both resistors will have the voltage of the battery.
What are resistors that produce a straight line graph called?
Linear resistors
What are resistors and why are they used?
Resistors are like funnels, they restrict the flow of current.
