# What are the colors of resistors?

Components and wires are coded with colors to identify their value and function. The colors

**brown**, red,**green**,**blue**, and violet are used as tolerance codes on 5-band resistors only. All 5-band resistors use a colored tolerance band.A.

### What is a resistor color code?

An electronic

**color code**is used to indicate the values or ratings of electronic components, usually for**resistors**, but also for capacitors, inductors, diodes and others. A separate**code**, the 25-pair**color code**, is used to identify wires in some telecommunications cables.#### Who invented the resistor and when?

Otis Frank Boykin#### How do you read a resistor color code?

**Steps**- Position the resistor with the gold or silver color band to the right..
- Read the color sequence that must be decoded to determine resistance.
- Determine the coded number for the resistive value.
- Determine the tolerance of the resistor.
- Determine the decoded number for the resistive value.

#### What is the definition of a resistor?

A**resistor**is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits,**resistors**are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses.

B.

### How do you read a resistor color code?

**Steps**

- Position the resistor with the gold or silver color band to the right..
- Read the color sequence that must be decoded to determine resistance.
- Determine the coded number for the resistive value.
- Determine the tolerance of the resistor.
- Determine the decoded number for the resistive value.

#### What is a resistor made up of?

Resistor composition. Resistors can be constructed out of a variety of materials. Most common, modern resistors are made out of either a carbon, metal, or metal-oxide film. In these resistors, a thin film of**conductive**(though still resistive) material is wrapped in a helix around and covered by an insulating material.#### How do you read a capacitor?

**Method 2****Reading Compact Capacitor Codes**- Write down the first two digits of the capacitance.
- Use the third digit as a zero multiplier.
- Work out the capacitance units from context.
- Read codes that contain letters instead.
- Read the tolerance code on ceramic capacitors.
- Read letter-number-letter tolerance values.

#### How do you check a resistor with a multimeter?

**Steps**- Remove power from the circuit containing the resistor.
- Isolate the resistor from the circuit.
- Inspect the resistor.
- Read the resistor value visually.
- Prepare a digital multimeter (DMM) to measure the resistor.
- Measure the resistance.
- Determine the actual resistance of the resistor.

C.

### How can we calculate tolerance value of resistors?

The

**tolerance**band is silver, so we multiply our**resistance**by 0.1. This means that our**resistor's**value can be as high as 16.5 Ω or as low as 13.5 Ω. For the third**resistor**, we'll perform the**calculation**in an alternative way. Take the nominal value and multiply it by 1 + your**tolerance**, which is (1+0.1).#### How can we calculate tolerance value of resistors?

The**tolerance**band is silver, so we multiply our**resistance**by 0.1. This means that our**resistor's**value can be as high as 16.5 Ω or as low as 13.5 Ω. For the third**resistor**, we'll perform the**calculation**in an alternative way. Take the nominal value and multiply it by 1 + your**tolerance**, which is (1+0.1).#### What is the color code for a 220 ohm resistor?

220R / 220 ohm Resistor Colour CodeValue 220 Ω Type 4 Band Colour Code System Colour Code Red, Red, Brown, Gold Multiplier Brown, 10 Tolerance Gold Band ±5% #### Why is there a difference between the measured value and the nominal value of the resistors?

The actual (**measured**) resistance will vary from the**nominal value**due to subtle mechanical and chemical differences that occur during manufacturing. The manufacturer specifies the maximum deviation from the**nominal value**as a ±percentage. This range of deviation is called the tolerance of the**resistor**family.

Updated: 29th September 2018