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How can a variable resistor be used to control the brightness of light?
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What are 2 practical uses for a variable resistor?
A variable resistor is very important in a circuit, because it allows you to build a circuit with some degree of control. For example, a volume knob can be a variable resistor. It can act as a control on the amount of current flowing.This depends mostly on the circuit it is used in. Some typical purposes are:variable adjustment of circuit to meet users need: volume, brightness, contrast, etc. controls.trimmer to compensate for component tolerances in circuit.compensation for distortions of device driven by circuit.etc.
What is brightness as sound is to light?
Loudness is to brightness as sound is to light.
What is the resistor inside a light bulb called?
the wire in your light bulb is a resistor :)
What instrument is used to mesure the brightness of light?
Scroll down to related links and look at "Brightness - Wikipedia" and "Light intensity - Wikipedia".
A light waves brightness depends on the?
amplitude of the light wave!
Where is a variable resistor in your home?
If you have a light switch where you can brightener it or dim it that is a VARIABLE RESISTOR.
Is Light dependent resistor an example of resistor?
yes, a variable resistor
How do you set the sensitivity of a light dependent resistor?
using a variable resistor we can adjust the sensitivity of a light dependent resistor
What are 2 practical uses for a variable resistor?
A variable resistor is very important in a circuit, because it allows you to build a circuit with some degree of control. For example, a volume knob can be a variable resistor. It can act as a control on the amount of current flowing.This depends mostly on the circuit it is used in. Some typical purposes are:variable adjustment of circuit to meet users need: volume, brightness, contrast, etc. controls.trimmer to compensate for component tolerances in circuit.compensation for distortions of device driven by circuit.etc.
What products use Variable resistor?
Toasters and lightbulbs.AnswerA resistor is an circuit component. So, while toasters and light bulbs have resistance, they are not resistors!
What is a light curve graph?
A light curve graph that displays an object's brightness over time mostly used in variable star astronomy.
How is the brightness of the LED affected by different resistor values?
LED's are light emmitting diodes. diodes have a voltage threshold that must be reached for them to fully "turn on". A resistor can be used to limit that voltage. As the voltage drop across the diode is increased above the turn on voltage (typically .5 - .7 volts), the diode will emmit light. The LED will only light up so far, so by turning the voltage up significantly more will have a very limitted payback in light output.
Does Polaris reflect light?
Polaris (North Star or Pole Star) has an apparent magnitude of +1.97 (Variable)
Name four uses for vabiable resistor?
Volume Control Light Control Speed/Frequency Control Temperature Control
How dimer switsh work?
It works by sending the current through a resistor. As you twist the dimmer switch it changes the length of the resistor and the longer the resistor the more it inhibits the current. So at full brightness the resistor has been totally bypassed as you turn the light down the contact moves further around the resistor making it longer.
What is wariable?
Ordinarily you will have two variables in your experiment. These are the dependent variable, and the control variable.For example if you were measuring the fuel consumption in a car at various speeds, then you would vary the speed as your control variable, and measure the fuel consumption as the dependent variable.In this example, the speed is the easier one for you to vary.If I wished to determine the light bulb life at various voltages, it would make sense to control the voltage as your control variable, and measure the running time (or maybe the brightness) as a function of the voltage.
Will a bad heater motor resistor cause your climate control panel not to light up?
No.
