# What is the value of E12?

E series of standard resistor values

Table of Contents

## What is the value of E12?

E series of standard resistor values

Summary of EIA Preferred or Standard Resistor value Series | ||
---|---|---|

E Series | Tolerance (Sig Figs) | Number of values in each decade |

E12 | 10% | 12 |

E24 | 5% [normally also available in 2% tolerance] | 24 |

E48 | 2% | 48 |

**What is resistor E-series or standard values?**

Each E series subdivides each decade magnitude into steps of 3, 6, 12, 24, 48, 96, 192 values. Subdivisions of E3 to E192 ensure the maximum error will be divided in the order of 40%, 20%, 10%, 5%, 2%, 1%, 0.5%. Also, the E192 series is used for 0.25% and 0.1% tolerance resistors.

### What are the standard resistor values?

Resistors with 10% tolerance

Resistance | ||
---|---|---|

ohm | kohm | |

12 | 120 | 1.2 |

15 | 150 | 1.5 |

18 | 180 | 1.8 |

**What is resistor value?**

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 a resistor value?

**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:

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

### What is E24 series resistor?

The different sets of standard resistor values are known by their E-series numbers: E6 has six resistance values in each decimal interval, E12 has twelve, E24 has twenty-four and so forth.