#### Transcript of Electrical Fundamentals - Parallel Circuits (Module 3)

**Parallel Circuits**

**Introduction**

A parallel circuit is a circuit that has two or

more paths (or branches) for current flow

Parallel Circuit Calculations

Parallel circuit branches are independent

of each other

Example 1:

Calculate:

total resistance

individual currents

total current

Example 2:

Example 3

Find the total resistance of the circuit.

Given the circuit shown:

a. Find the total resistance, Rtot.

b. Find the total current, Itot.

c. Find voltage across each resistor.

d. Find the current through each

resistor.

Power Calculations in Parallel Circuits

PT= VT x IT

PT=P1+P2+P3

Kirchhoff's Current Law

I1+I2+I3+I4=0

Example 4

If I1=900mA, I2=-600mA, and

I3=600mA,

What is I4?

Exercise :

In the circuit diagram

shown , find the total

current I.

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