Simple DC Circuits
The following topics serve as standalone lessons. You can attempt them at your own pace but each presentation is intended as a one-hour lesson.
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Lesson vocabulary
Lesson vocabulary
Voltage
Voltage
noun: voltage; plural noun: voltages
an electro-motive force (EMF), or potential difference, expressed as volts. It can be thought of as an 'electrical pressure' which causes electrons to be pushed around a circuit.
by Ohm's law, voltage (measured in volts) is equal to the current multiplied by the resistance.
Current
Current
noun: current; plural noun: currents
a flow of electricity which results as a result of the orderly movement of electrons around an electrical circuit. Current is the result of a voltage (potential difference or EMF). When there is no voltage, there can be no current.
by Ohm's law, current (measured in amperes or amps) is equal to the voltage divided by the resistance.
Resistance
Resistance
noun: resistance; plural noun: resistances
the magnitude (amount) of which a substance or device opposes the passage of an electric current, causing energy dissipation.
by Ohm's law, resistance (measured in ohms) is equal to the voltage divided by the current.
Learning Activities
Simple DC Circuits
Learning Activities
Simple DC Circuits
Electricity is highly dangerous. In order to understand how it behaves, we should really have a 'play' around with it in a safe environment.
Electronic Circuit Simulator
Electronic Circuit Simulator
You will use this simulator to build simple DC circuits, which will help build your understanding of how electricity behaves and how understanding Ohm's Law helps us control the current flow in the circuit to make it 'work for us'.
You will need to take screenshots periodically. To do this, press 'PRINT SCREEN' and then 'CTRL + V' to paste the image into your work.
Click here to view FULL SCREEN
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