## How do you find R1 and R2?

The resistance of each element is given by the formula Rj = V / Ij. For example, if you have three resistors in parallel with a voltage drop of 9 Volts and currents I1 = 3 Amps, I2 = 6 Amps and I3 = 2 Amps, the resistances are R1 = 3 Ohms, R2 = 1.5 Ohms and R3 = 4.5 Ohms.

### How do you add two resistors in parallel?

Use Ohm’s Law to add parallel resistors. The equation is 1/R(Total) = 1/R1 + 1/R2 + 1/R3 + … + 1/R(Last). Apply Step 3 to calculate the total resistance of two resistors placed parallel to each other.

#### How do you find the missing resistor in a parallel circuit?

Resistance for parallel circuits are calculated by the formula: 1/Req= 1/R1 + 1/R2.

How do you calculate resistors in series and parallel?

When resistors are connected one after each other this is called connecting in series. This is shown below. 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 is the resistance of R2?

The resistance of R2 is 1 k ohm.

## How do you solve for parallel and series resistance?

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. Example: To calculate the total resistance for these three resistors in series.

### What is the resistance of two resistors in parallel?

Two identical resistors in parallel have an equivalent resistance half the value of either resistor. The current splits equally between the two.

#### How do you calculate the resistance of a parallel circuit?

Calculate the total resistance of the parallel circuit by using the equation 1/Rtotal = 1/R1 + 1/R2 + 1/R3 + + 1/Rn. This equation states that by adding the inverses of all of the individual resistors, you will get the inverse of the total resistance. Pretend that you have two resistors in parallel, and each is four ohms.

How do you calculate resistance parallel?

When you are calculating the total resistance of a parallel circuit you take each individual resistance and divide it into (not by) one. You then add up all the resistances that were divided into one and divide that sum into one.

How do you calculate current in parallel circuit?

How to Calculate the Current in a Parallel Circuit. The current at A 2 flowing through the 2 ohm resistor. can be found using the equation V = I x R. The equation can be rearranged to give. current = voltage ÷ resistance I = V ÷ R.

## What is the equation for a resistor?

Ohm’s law formula. The resistor’s current I in amps (A) is equal to the resistor’s voltage V in volts (V) divided by the resistance R in ohms (Ω): V is the voltage drop of the resistor, measured in Volts (V). In some cases Ohm’s law uses the letter E to represent voltage.