Table of Contents
- 1 What is meant by fixed resistor?
- 2 What are the advantages of using fixed resistor?
- 3 What does a resistor variable do in a circuit?
- 4 What are the advantages and disadvantages of using fixed resistors?
- 5 What is the difference between a fixed resistor and variable resistor?
- 6 What are the advantages and disadvantages of using fixed resistor?
- 7 What type of conductor is a fixed resistor?
- 8 What does a fixed resistor do in a circuit?
- 9 What is the difference between a resistor and an insulator?
What is meant by fixed resistor?
Fixed Resistor Definition A resistor having a fixed, defined electrical resistance which is not adjustable. In an ideal world a perfect resistor would have a constant ohmic resistance under all circumstances. This resistance would be independent of for example frequency, voltage or temperature.
What are the advantages of using fixed resistor?
The main advantages of these resistors are their high stability, wide operating range, low noise, and low cost. The carbon film resistors are the most preferred ones over carbon composition resistors due to their low noise.
What does a resistor variable do in a circuit?
Variable resistors are widely used in electric circuits to adjust the value of current or voltage, since the resistance of variable resistors can be set to a certain value. Variable resistors allow you to adjust the value of voltage by changing the resistance and keeping current constant .
What are the features of a fixed resistor?
The two most obvious characteristics of any fixed resistor are its nominal resistance value and its maximum dissipation. The nominal resistance value will be colour coded (Table 2.2) or printed on to the body of the resistor, and in the UK the value will be shown using the convention that is explained in Figure 2.3.
Why are fixed resistors ohmic?
For a fixed resistor, the potential difference is directly proportional to the current. This relationship is called Ohm’s Law and is true because the resistance of the resistor is fixed and does not change. A resistor is an ohmic conductor .
What are the advantages and disadvantages of using fixed resistors?
Advantages and disadvantages of resistors
- Advantages of resistors. Simple working principle and construction. Compact size. Cost friendly. Easy maintenance. Wide application areas. Various types.
- Disadvantages of resistors. Heat dissipation. Short circuit. Dust and corrosion. Tolerance. Stability problems. Non-linearity.
What is the difference between a fixed resistor and variable resistor?
Variable resistors means that a resistor can change its resistance value through the control of a person or himself. Fixed resistance means that it cannot change its value.
What are the advantages and disadvantages of using fixed resistor?
What is an example of a fixed resistor?
The different types of fixed resistors include: Wire wound resistor. Carbon composition resistor. Carbon film resistor.
What devices use fixed resistors?
Fixed resistors are the most frequently used resistors in the electronic circuits. These resistors have the fixed resistance value….Types of fixed resistors
- Wire wound resistor.
- Carbon composition resistor.
- Carbon film resistor.
- Metal film resistor.
- Metal oxide film resistor.
- Metal glaze resistor.
- Foil resistor.
What type of conductor is a fixed resistor?
ohmic conductor
A resistor is an ohmic conductor .
What does a fixed resistor do in a circuit?
Resistance definition. The process of restricting the flow of electric current to certain level is called resistance.
What is the difference between a resistor and an insulator?
These following points will give u the difference between Resistor and an insulator: Resistor is a device that opposes the flow of electrons but an insulator do not allow electrons to flow. Resistor can offer various resistance can be low or high but Insulator posses a high resistance.
Is fixed resistor an ohmic conductor?
This relationship is called Ohm’s Law and is true because the resistance of the resistor is fixed and does not change. A resistor is an ohmic conductor. In a filament bulb, the current does not increase as fast as the potential difference. Doubling the amount of energy does not cause a current twice as fast.
What are the functions of a resistor?
A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit. Resistors can also be used to provide a specific voltage for an active device such as a transistor .