This module introduces students to the fundamentals of current, voltage and resistance and Ohm’s law. In addition, the module introduces essential concepts such as the relationship between temperature and resistance, electron velocity, and the direction of current flow. The module also covers the difference between work and energy and explains the methodology of calculating power consumption. A comparison of Ampere-hours and watt-hours is also presented.
Learning Objectives
Upon completion of this module, you will be able to:
- Define electric current
- Explain electron flow and conventional flow
- Describe electric potential and voltage
- List the five main types of voltage sources
- Differentiate between a voltage and current source
- Define the term resistance
- Explain the difference between capacitance and inductance
- Use Ohm’s law to find voltage, current or resistance
- Describe relationship between temperature and resistance
- Differentiate between work and energy
- Determine efficiency of an electrical device
- Calculate power consumption in kilowatt-hours
- Differentiate between watt-hours and ampere-hours