![]() At the same time, it is hard to find 20% resistors today - they were common at the beginning of the transistor radio era. For some critical components, the tolerance can be specified as ☑% or even ☐.05%. For a 1 kilohm resistor, this means that any resistor with a value in the range of 800 ohms to 1200 ohms is acceptable. In many cases, ☒0% of precision is enough. Here we will talk about inexpensive resistors used in electric circuits, which do not require high precision. There are very expensive resistors used for measurements. ![]() Besides, high precision resistors are relatively rarely used. Of course, it is possible to make a resistor with very precise resistance, however, it will be insanely expensive. More information about resistance, resistivity and conductance. Any material shows some resistance except superconductors, which have zero resistance. ![]() The electrical resistance of a resistor or an electrical conductor is a measure of the opposition to the flow of electric current. ![]()
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