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One way to look at the purpose of a resistor is as a device built to dissipate
electrical energy. Some (but usually not all) of the energy of the current through
a circuit is always dissipated when it flows through a resistor. The energy lost
leaves the resistor in the form of heat.
The number of joules of electrical energy lost and heat dissipated by the resistor is
(amperes of current through the resistor)2 x (ohms of resistance) x (seconds of time it continues)
If you work with resistors often, or see several of them inside an old radio, you notice
that there are physically big ones and physically small ones. The size of the resistor
isn't related to the number of ohms of resistance it has. The physical size is related
to how fast it can dissipate energy (heat) without melting or burning up. A bigger
resistor has more air around it, so it can get rid of heat faster.
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What is the voltage across the first ohm resistor?
if R4 is the only resistor (the load), then the drop would be the same as the energy source
What device could not provide the energy for current to flow in a circuit?
a resistor
What is the purpose of a resistor in an electronic circuit If the resistor converts energy to heat then are you wasting energy any time you use a resistor?
In its simplest use a resistor in a circuit is used to limit the amount of current flow, or to decrease the amount of voltage applied to a device. One example is you had a 12 volt battery and you need/ wanted to connect it to a device that ran on 9 volts then a resistor can be chosen to reduce the 12 volts to the 9 volts required.
What Material Used For Electric Ovens using heating elements?
A resistor, which converts some electric energy to thermal energy!
What is effect of an unbypassed resistor on the common emitter amplifier circuit?
An emitter resistor in a common emitter circuit will cause the stage to experience the effects of degenerative feedback if it is unbypassed. The degenerative feedback reduces gain. This is probably the primary effect in the described circuit.
What does a pencil resistor do?
A Pencil Resistor is a thing that gives energy to something or anything that needs energy.
What changes electrical energy to heat energy?
A resistor.
What do a resistor do in a circuit?
A resistor is a device that impedes or limits the flow of electrical current in a circuit. It converts the current's electrical energy into heat (thermal) energy. A resistor reduces the amount of energy in a circuit and pumps it out as a heat.
What does a resistor do in in a circuit?
A resistor is a device that impedes or limits the flow of electrical current in a circuit. It converts the current's electrical energy into heat (thermal) energy. A resistor reduces the amount of energy in a circuit and pumps it out as a heat.
What effect if any does connecting an ammeter in series with a resistor in a circuit have on the current though the resistor?
That depends on the quality (price) of the meter. Ideally it should have no effect.
How do you use resistor in a sentence?
I installed a resistor inline with my oil pressure sensor. The resistor in a circuit will usually disperse energy as heat.
What does it mean when you say that energy is lost in a resistor?
When we say that energy is lost in a resistor, it really means that electrical energy has bee transformed into other forms of energy. These other forms of energy do not easily get changed back into electrical energy.
Why do resistor voltage decrease while capacitor discharges?
The reason why resistor voltage decreases while a capacitor discharges is because the resistor acts like a source of electrical energy. As the capacitor discharges, it draws energy from the resistor, which causes the voltage across the resistor to decrease. This is because the capacitor is acting like a drain, and is taking energy out of the resistor, thus causing the voltage across the resistor to decrease. The resistor and capacitor work together in order to create a discharge circuit. This is done by connecting the capacitor to the resistor, and then to a voltage source. The voltage source supplies the energy to the resistor, and then the resistor transfers this energy to the capacitor. As the capacitor discharges, it takes energy from the resistor, which causes the voltage across the resistor to decrease. In order to understand this process better, it is important to understand the basics of Ohm's Law. Ohm's Law states that the voltage across a resistor is equal to the current through the resistor multiplied by the resistance. As the capacitor discharges, it takes energy from the resistor, which means that the current through the resistor decreases, and therefore the voltage across the resistor will also decrease.
What is an example of a resistor that transforms electrical energy to light energy?
A lightbulb filament.
What does the heater resistor blower effect on a 99 mercury sable?
A bad heater blower motor resistor would effect one or more blower speeds other than high.
What is the use of ceramic resistor?
there is less loss of energy through heat, ergo making a more efficient resistor.
What is the name for an electrical load that converts electrical energy into heat energy?
A Resistor or Resistance
