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A typical resistor will burn out when it dissipates power in excess of double its power dissipation rating for an extended period of time.

The power dissipated by a resistor is equal to I2R or E2/R, where

E = the voltage across the resistor

I = the current through the resistor

R = the resistance of the resistor

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16y ago

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Are resistors normally short when they burn out?

When resistors burn out, they typically fail in an open circuit condition rather than a short circuit. This means that they stop conducting electricity altogether, which can cause the circuit to break. However, in some cases, particularly with low-quality resistors, they may fail short, allowing current to flow freely. Overall, open failures are more common than short failures in resistors.


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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.


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When resistors are connected in series then what happens to the watt?

Resistors are rated in wattage so the lowest wattage rating will be the wattage of the series circuit. It will be able to handle that power any more and the lowest wattage resistor could be damaged and fail.Another AnswerWhen two or more resistors are connected in series, the resistor with the lowest resistance will operate at the highest power. If the power developed by a resistor exceeds its rated power, then the resistor may burn out.

Related Questions

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The typical spread (deviation) from the nominal value of the resistance of several resistors.


Are resistors normally short when they burn out?

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How do you reduce a line level audio signal to a mic level In a low impedance circuit?

To reduce a line level audio signal to mic level in a low impedance circuit, you can use a passive attenuator, such as a voltage divider, consisting of resistors. This involves selecting two resistors: one connected to the line level source and the other connected to ground. The output is taken from the junction of the two resistors, which effectively lowers the signal voltage to mic level. Alternatively, an active solution like a preamp can be used to match impedance and adjust the signal level more effectively.


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What happens to the value of a resistor when it goes bad?

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