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

##### 1 Answer

Apr 14, 2014

Use the resistance formula:

**Example**:

You have 4 resistors all connected in parallel. R1 and R2 each have a resistance of 4 ohms, R3 and R4 each have a resistance of 8 ohms. What is the total resistance?

(Find a common denominator)

(Rp is the reciprocal of this)

Rp =