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the power is more evenly distributed in a carbon rod than a wire
hi resistance wire wound can have 100s of feet of very fine wire
very prone to heat failure
solid carbon distributes the heat over the entire volume of the carbon
carbon resistors are far better with higher voltages and resistances
What else can I help you with?
How is the stepped resistor differ from the fixed resistor?
A stepped resistor, also known as a variable resistor or rheostat, allows for adjustable resistance levels, enabling fine-tuning of current flow in a circuit. In contrast, a fixed resistor has a constant resistance value and does not change. While stepped resistors can be used for applications requiring variable resistance, fixed resistors are typically used in applications where a specific resistance is needed. The ability to adjust resistance in stepped resistors offers greater flexibility in circuit design.
What are the limitations of a resistor?
Resistors have several limitations, including power dissipation, which can lead to overheating if the power rating is exceeded. They also exhibit tolerance variations, meaning their actual resistance can differ from the stated value. Additionally, resistors can introduce noise in sensitive circuits and may have non-linear behavior at high frequencies or voltages, affecting performance in certain applications. Finally, they are passive components, meaning they cannot amplify signals or provide energy to a circuit.
How will amps and current differ in a series if you get resistors with different resistance?
-- "Amps" and "current" are the same thing. Electric current is measured in units of Amperes. -- The current is always the same at every point in a series circuit, no matter how many resistors of the same or different values are in the circuit.
What is the difference between a series ohmmeter and a shunt ohmmeter?
Basically, your series and shunt ohmmeters differ in circuit configuration. Your series ohmmeter is configured in a way that your "meter" (which has internal resistance) is connected in series to your "measured resistor" and we all know that those TWO resistances will ADD up causing some sort of inaccuracy. While on the other hand, your shunt ohmmeter is configured in a way wherein your "meter" is connected in PARALLEL to your "measured resistor" that will ease-up the inaccuracy but will only measure resistances ranging from 200 Ohms to 400 Ohms (typically and depending on your configuration).
Why the color coded value of a resistor is differ from the value read from the tester?
The color bands show the nominal resistance. The actual resistance is within some percentage (tolerance) of the nominal resistance, so the measured resistance is close to the nominal but not exactly the same. Also resistance varies with factors like temperature and age of the device.
How is the stepped resistor differ from the fixed resistor?
A stepped resistor, also known as a variable resistor or rheostat, allows for adjustable resistance levels, enabling fine-tuning of current flow in a circuit. In contrast, a fixed resistor has a constant resistance value and does not change. While stepped resistors can be used for applications requiring variable resistance, fixed resistors are typically used in applications where a specific resistance is needed. The ability to adjust resistance in stepped resistors offers greater flexibility in circuit design.
What would be the best size for resister?
Electronic resistors differ from equipment to equipment. Without prior knowledge of the equipment you intend to use resistor for, it can't be answered.
Why does resistance value measured using multimeter differ from one decoded using colour band?
Resistors have tolerance. So does the multimeter. Standard resistors range from 20% (no fourth band), to 10% (fourth band silver), to 5% (fourth band gold). Resistors will not normally measure exactly what you expect, and proper circuit design must take this into account.The multimeter may not be calibrated correctly.
Why nominal value differ from measured value of resistors?
Nominal values of resistors are predefined standard values set by manufacturers, while measured values can differ due to tolerances, manufacturing variations, and environmental factors. Tolerances indicate the permissible deviation from the nominal value, which can range from a few percent to higher values, depending on the resistor type. Additionally, temperature, humidity, and aging can affect the resistance, leading to discrepancies between the nominal and measured values.
What are the limitations of a resistor?
Resistors have several limitations, including power dissipation, which can lead to overheating if the power rating is exceeded. They also exhibit tolerance variations, meaning their actual resistance can differ from the stated value. Additionally, resistors can introduce noise in sensitive circuits and may have non-linear behavior at high frequencies or voltages, affecting performance in certain applications. Finally, they are passive components, meaning they cannot amplify signals or provide energy to a circuit.
Why are measured values of resistors different from the stated values?
1: Resistors are manufactured with different tolerances, ie they're allowed to be both a bit above as well as below the target value. 2: If you're using a simple multimeter there's no telling how close the measured value is to the real value anyhow, once that you get down to the decimal places.
How does molecule of carbon monoxide differ from a molecule of carbon dioxide?
Carbon monoxide is CO and carbon dioxide is CO2.
How will you differ a resistor and resistance?
resistance is the hindrance caused to some flow be it flow of liquids,flow of positive charges etc. whereas resistor is the device used to vary the resistance of the electric circuit
How does protein differ from other energy nutrients?
carbon
What pairs differ by only a proton?
Isotopes of an element with adjacent atomic numbers differ by only a proton. For example, carbon-12 and carbon-13 isotopes differ by one proton.
What aspect of a series circuit is the same for each resistor as well as the total circuit?
Current is the same..... In a series circuit: V=V1+V2+...+Vn and R=R1+R2+...*Rn If voltage remains constant at the source (total circuit), and resistors differ in resistance (R1,R2,...,Rn), and V=I*R, then: I*R=I1*R1+I2*R2+...+In*Rn Seeing as I*R=const and voltage drop across every resistor is proportional to its resistance: I*R=I*(R1+R2+...+Rn) Therefore: I=I1=I2=...=In
How will amps and current differ in a series if you get resistors with different resistance?
-- "Amps" and "current" are the same thing. Electric current is measured in units of Amperes. -- The current is always the same at every point in a series circuit, no matter how many resistors of the same or different values are in the circuit.
