How do you calculate resistor value?

How do you calculate resistor value?

Calculating Resistor Colour Code Values

For example, a resistor has the following coloured markings; Yellow Violet Red = 4 7 2 = 4 7 x 102 = 4700Ω or 4k7 Ohm. The fourth and fifth bands are used to determine the percentage tolerance of the resistor.

How do you calculate a 5 band resistor?

Let’s take an example of a 5-band resistor with the colors given in the above image (brown, green, red, black and gold). So according to the formula the resistance will be: 152 * 1 = 152 Ohms with 5% tolerance.
…
Calculating resistance for a 5-band resistor.

How do you value a resistor using color code chart?

The fourth band (or 5th for the 5-band and 6-band) indicates the tolerance values. Here, two colors are added (gold and silver). The 6th band for a 6-band type resistor is the temperature coefficient.
Resistor Band Colors.

How do you read a 4 band resistor?

The first band gives us the first digit of our resistor. The second band gives us the second value of our resistor. The third band gives us a multiplier.

What is the value of a resistor?

Resistors. A resistor is a device that opposes the flow of electrical current. The bigger the value of a resistor the more it opposes the current flow. The value of a resistor is given in ohms and is often referred to as its ‘resistance’.

What is coded value in resistor?

The color code is given by several bands. Together they specify the resistance value, the tolerance, and sometimes the reliability or failure rate. The number of bands varies from three to six. At a minimum, two bands indicate the resistance value and one band serves as multiplier.

What is the value of a 10k resistor?

Total Value: 10,000 ± 5% Ω

What is the value of 6 band resistor?

A 6 band resistor is essentially a 5 band resistor with an extra ring that denotes the temperature coefficient or sometimes, the failure rate. The most common color for the sixth band is brown (100 ppm/K), which means that for every 10℃ change in temperature, the resistance value changes by 0.1%.

How do you calculate resistors in a circuit?

To calculate the total overall resistance of a number of resistors connected in this way you add up the individual resistances. This is done using the following formula: Rtotal = R1 + R2 +R3 and so on.

What color is a 470 ohm resistor?

470 Ohm Resistor Color Code: Yellow, Violet, Brown, Golden. Resistance: 470 Ohm, Power Rating: 2 Watts, Approximate Maximum Current: 65.23mA .

What are the 4 types of resistors?

Types of Resistors

• Fixed Value Resistors. These are the predominant type of resistor configuration, and as the name suggests, they have a fixed resistance value.
• Variable Resistors.
• Resistor Networks.
• Carbon Film Resistors.
• Metal Film Resistors.
• Wirewound Resistors.
• Metal Oxide Resistors.
• Metal Strip Resistors.

How many ohms is a 1K resistor?

1,000 ohms
So, a 1k Ω resistor has a value of 1,000 ohms and the number we will code is 1,000.

What is 100K resistor?

A 100K Ohm resistor can be identified using the color code of Brown-Black-Yellow-Gold or Brown-Black-Black-Orange-Gold for a five band resistor.

What is 22K resistor?

22K Ohm 2W High Quality Carbon Film Resistor (CFR) with ±5% Tolerance and Tin Plated Copper Leads. 22K Ohm Resistor Color Code: Red, Red, Orange, Golden. Resistance: 22K Ohm, Power Rating: 2 Watts, Approximate Maximum Current: 9.54mA.

What is the tolerance of a 4 band resistor?

4 band resistor
By using the color code chart, one finds that green stands for 5 and blue for 6. The third band is the multiplier, with red representing a multiplier value of 2 (102). Therefore, the value of this resistor is 56 · 102 = 56 · 100 = 5600 Ω. The gold band means that the resistor has a tolerance of 5%.

How do you read a 3 band resistor?

For a 3-band resistor color codes, the first two bands always denote the first two digits of the resistance value while the third band represents the multiplier. In the example we have, the bands are brown, black and brown. The first band is the brown band closest to the edge.

How do you find the value of a resistor in a series circuit?

In a series circuit you will need to calculate the total resistance of the circuit in order to figure out the amperage. This is done by adding up the individual values of each component in series.
To calculate the total resistance we use the formula:

1. RT = R1 + R2 + R3.
2. 2 + 2 + 3 = 7 Ohms.
3. R total is 7 Ohms.

How do we determine the resistance value of a resistor practically?

Thus, Ohm’s law provides the essential approach to measuring the value of a resistor: if you know the voltage drop across the resistor and the current flowing through the resistor, you know the resistance.

What does R stand for in resistor?

Resistance
Resistance (R) is a property of a material used for describing the opposition provided to the flow of current. The higher the resistance provided by a material, the lower the flow of electrons or current through the material.

What is a resistor symbol?

The ohm (symbol: Ω) is the SI unit of electrical resistance, named after Georg Simon Ohm. An ohm is equivalent to a volt per ampere.

Why is resistor used?

A resistor is a two-terminal electrical component that provides electrical resistance. In electronic circuits, resistors are predominantly used to lower the flow of current, divide voltages, block transmission signals, and bias active elements.

What is R and K in resistor?

Resistor shorthand
The letter R means multiply by 1. For example: 560R means 560. 2K7 means 2.7k. = 2700.

Why we use 1k resistor?

This resistor performs two functions. 1) It is a pull-down resistor. 2) It is part of a voltage divider. This allows the threshold voltage to be set to the desired value.

How do you identify a 27K resistor?

27K Ohm Resistor Color Code: Red, Violet, Black, Red, Brown. Resistance: 27K Ohm, Power Rating: 0.25 Watt, Approximate Maximum Current: 3.04mA ..

What color is a 4.7 K resistor?

4.7K Ohm Resistor Color Code: Yellow, Violet, Red, Golden. Resistance: 4.7K Ohm, Power Rating: 0.25 Watt, Approximate Maximum Current: 7.29mA .