What are the standard resistor values?

The most common series are:

E6 20% tolerance.
E12 10%
E24 5% (also available with 1%)
E48 2%
E96 1%
E192 0.5% (also used for resistors with 0.25% and 0.1%).

What is standard resistor?

Standard resistors are very high precision resistors used as a reference to calibrate or verify the accuracy of other resistors in industry or establishments, on lines or production equipment. these are also used to check the accuracy of resistance meters by most manufacturers.

How do u calculate the resistance of a resistor?

Your units are ohms for resistance, volts for voltage, and amps for current. This formula tells you that your resistance is always equal to your voltage divided by the current. You can also say that your voltage is equal to your current multiplied by your resistance, or V = IR in equation form, with R = V / I.

What three values are most resistors rated in?

Power is measured in units called watts. The more watts a resistor can handle, the larger and more expensive the resistor is. Most resistors are designed to handle 1/8 W or 1/4 W. You can also find resistors rated for 1/2 W or 1 W, but they’re rarely needed in the hobbiest types of electronic projects.

What is resistor and its uses?

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.

What is the formula of resistor?

According to Ohm’s law, the voltage drop, V, across a resistor when a current flows through it is calculated by using the equation V=IR, where I is current in amps (A) and R is the resistance in ohms (Ω).

What is the formula to calculate resistance?

If you know the total current and the voltage across the whole circuit, you can find the total resistance using Ohm’s Law: R = V / I. For example, a parallel circuit has a voltage of 9 volts and total current of 3 amps. The total resistance RT = 9 volts / 3 amps = 3 Ω.

How are the standard resistor values calculated in Excel?

Standard resistor values are calculated using the simple formula given below. Round the results to the proper number of significant figures (three for 1% and 2%, two for 5% and 10%). As the chart at the right shows (created in Excel), plotting the values on a logarithmic scale results in a straight line due to the exponential in the equation.

How are resistor values arranged in a circuit?

To simplify resistor manufacture, handling, purchase & electronic circuit design, resistor values are arranged into standard resistor values conforming to the E series. Resistor values are organised into a set of different series of preferred values or standard resistor values.

What’s the tolerance for a 355 kΩ resistor?

As the chart at the right shows (created in Excel), plotting the values on a logarithmic scale results in a straight line due to the exponential in the equation. Example: Calculations indicate the need for a 355 kΩ resistor and a tolerance of 1%.

What is the value of a 120 ohm resistor?

The 120 ohm resistor has a value ranging between 110 and 130 ohms. Following this logic, the preferred values for 10% tolerance resistors between 100 and 1,000 ohms would be 100, 120, 150, 180, 220, 270, 330 and so on (rounded appropriately); this is the E12 series shown in the table below.

What are the standard resistor values? The most common series are: E6 20% tolerance. E12 10% E24 5% (also available with 1%) E48 2% E96 1% E192 0.5% (also used for resistors with 0.25% and 0.1%). What is standard resistor? Standard resistors are very high precision resistors used as a reference to calibrate or verify…