# Electrical Circuit Calculations

### Engineering Studies – P4 Biomedical Engineering – Electricity

This topic covers the concepts of electrical flow in an electrical circuit and how to calculate various electrical values in an electrical circuit.

## Key Concepts

• Electrical quantities
• Ohm’s law
• Series and parallel circuits
• Power sources

## Discussion Questions

1. Discuss the concepts of electrical flow.
2. Define the quantities:
1. Electromotive force (EMF)
2. Resistance
3. Current
3. Why is Ohm’s law relevant?
4. Describe a circuit with components in ‘parallel’ compared with components in ‘series’.
5. How does a battery create and store electricity?

circuit calcs 544 KB
EEE042A Measure voltage, current and resistance NSW DET 2006 2006/060/09 LRR 3668

## Videos

Electromotive Force (EMF) - Nationall MagLab - YouTube
Calculating electricity usage
Amp hour calculations - Mr A Fairbanks
Power - Mr A Fairbanks
Resistance - Mr A Fairbanks
1 -Measuring Potential Difference - Australian National University - MeriSTEM
2 -Measuring Current - Australian National University - MeriSTEM
3 -Ammeters and Voltmeter setup - Australian National University - MeriSTEM
4 -Power - Australian National University - MeriSTEM
5 -Resistance - Australian National University - MeriSTEM
6 - Ohm's Law - Australian National University - MeriSTEM
7 - Resistivity - Australian National University - MeriSTEM
7 - Resistivity of materials - Australian National University - MeriSTEM
8 - Resistors in Series - Australian National University - MeriSTEM
9 - Resistors in Parallel - Australian National University - MeriSTEM
10 - Series and Parallel connections - Australian National University - MeriSTEM