0
The volume knob on an audio device (radio, TV) is an example of a variable resistor. A variable resistor is also known as a potentiometer.
Kaylah Ward
Add your answer:
Earn +20 pts
What are the four technologies of training equipment?
constant resistance variable resistance and accomodating resistance
A chest press with free weights would be an example of?
a) fixed variable b) variable resistance c) body weight resistance
How do you use resistance decade box?
we use it when we require a variable resistance in a circuit
What is the dependent variable when testing the conductivity of wood and lead?
The dependent variable is the one you measure. In this case, it would be the electrical resistance, measured in Ohms.An easy way to remember is to note that the resistance changes based on the material. The resistance is dependent on the material used, and thus the resistance is, in this case, the dependent variable.
What variable is inversely proportional to the resistance?
The current.
What does a variable risistor do?
It is a resistor which resistance is changeable, such as a potentiometer.
What type of system does potentiometer belong to?
Variable resistance.
What does independent variable mean in electricity?
An independent variable is something that you, as the experementer, change to try and get a set of results. E.g, in an electrical ciurcut you may change the voltage to see how it affects resistance. Voltage is the independent variable as your changing it, resistance is the dependant variable as it changes due to the change in the independent variable.
What do you mean by variable resistance or rheostat?
The volume control knob on a radio is an example of a variable resistor. By turning a knob, the resistance is altered and the volume (or current) is altered up or down.
How to calculate the resistance to step down DC voltage?
Connect a variable resistance across DC source (fixed ends of variable resistor or Rheostat) and take decreased DC output across its one fixed terminal and other variable terminal of variable resistor. Other method is connect variable resistor in series with DC output and load, vary the resistance and take decreased DC voltage as required.
What is the rheostat?
It is a variable resistance device which control the flow of current
Does a variable resistor have a bias?
A variable resistor means that the resistance can be varied, usually by using a slide. A fixed resistor can not be varied.
