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A variable resistor is used in cicuits to vary the current passing through the resistor. It is commonly used to change the value of current across a circuit, or to act as a voltage divider.
They are commonly equiped with a knob outside of a cabinet, to enable the user to adjust the operation of a circuit, like a volume control on a radio or amplifier.
What else can I help you with?
What is general purpose resistor?
General purpose resistor is used to resist the current flow.the common resister is general purpose resister.
What is the purpose of a resistor connected in the series with the load resistor?
Divide the voltage
What is the purpose of the series resistor in a voltmeter?
The purpose of the series resistor in a voltmeter is to limit the current flowing through the voltmeter and protect it from damage due to excessive current.
How does a resistor TBA820 work?
The TBA820 is a 2 watt general purpose amplifier integrated circuit, not a resistor.
Describe the purpose of the coloured bands on a resistor?
The colored bands on a resistor indicate its resistance value and tolerance. By interpreting the color code, you can determine the resistance value of the resistor and the range within which the actual resistance may vary. This helps in identifying, sorting, and using resistors in electronic circuits.
What is the purpose of a ballast resistor in a car?
a ballast resistor drops voltage. In chrysler products it drops to six (6) volts.
What is the purpose of a bleed resistor in a start capacitor?
its to count the diatamitaion of blood
What is the purpose of the colors bands on a fixed resistor?
hoy unga why hack mediocres you dirty
How do you install a resistor in an DC circuit?
It depends on the purpose for installing the resistor. If the intent is to decrease current flow, the resistor must be connected in series with the load. If the purpose is to increase current flow, the resistor must be connected in parallel with the load. To connect a resistor in series, connect the resistor to one side of the power source, in line with the load. This will decrease circuit current flow. To connect a resistor in parallel, connect the resistor between the positive and negative sides of the power source, which will effectively connect the resistor across the load . This will increase current flow through the circuit. However, before connecting a component in parallel, make sure the increase in current flow will not exceed the current rating of the circuit or fuses/breakers will blow.
What is the usage of 330 ohm resistor?
No. It will not serve its intended purpose.
What is the meaning of load resistance?
"Load resistor" is a discriptor, not a value. Any resistor can be a load resistor if it is the proper value and power for your application. So if you want a load resistor by itself, that makes no sense. A load resistor is a resistor selected for a specific purpose. For example, it you want to put a load on an audio amplifier made to drive an 8 ohm speaker to 50 watts, then your load resistor would be a 8 ohm 50 watt resistor. If you want a load resistor to terminate a 50 ohm line, you would need a 50 ohm resistor, although in this case, you probably want one that is part of a co-ax connector. A load resistor for an op-amp output is typically 2k, since most op-amps are rated for 10 volts at 5 mA. Etc, etc.
What is effect of emitter resistor?
It provide sufficient biasing to the transistor. ANSWER: It purpose is to provide bias and limiting gain.
