2 thoughts on “The device used to obtain a fixed resistance in a circuit is”
Answer:
The power transferred to fan is given as P=V
2
/R, where R is the total resistance of the circuit. As power is inversely proportional to total resistance. So for maximum power, the total resistance should be minimum. Total resistance here is R=
A resistor is a passive electrical device whose main purpose is to regulate the total flow of an electric current.
The term fixed resistance refers to a system whose resistance is fixed and cannot be reversed.
Such resistances are often used to monitor and restrict current in a known circuit, as well as to provide a consistent amount of heat in heating equipment by using the heating effect of electric current.
Answer:
The power transferred to fan is given as P=V
2
/R, where R is the total resistance of the circuit. As power is inversely proportional to total resistance. So for maximum power, the total resistance should be minimum. Total resistance here is R=
6+r
6r
+3. r is the variable resistance.
R is minimum when r=0.
The device is a resistor.