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Build a circuit with a battery, Light Emitting Diode (LED), switch, and a resistor
Build a circuit with a battery, Light Emitting Diode (LED), switch, and a resistor
Connecting wires and components (batteries, resistors, LEDs, etc.) in a loop creates a circuit that allows current to flow. Circuits provide a path for current to flow. To be a circuit, this path must start and end at the same point. Electrical Engineers use schematic diagrams to represent the circuit.
An electrical circuit is a complete, closed loop that allows electricity to flow, typically from a power source, through conductive components, and back to the source. A basic circuit includes a power source (like a battery or generator), connecting wires, a switch, and a load (like a light bulb or motor). The loop must be unbroken for current to flow; any break, such as opening a switch, creates an open circuit and stops the flow.
Circuit schematic
Select from your kit:
9-volt battery
9-volt battery connector with wire leads
Push button switch
100k Ohm resistor (Brown – Black – Yellow)
330 Ohm resistor (Orange – Orange – Brown)
Light Emitting diode (color varies from kit to kit)
Breakout board
Follow these steps to build the LED circuit
Install the battery connector with wire leads in rows 8 (red) and 2 (black)
Install the push button in rows 8 and 10
Install the LED in rows 7 and 8 (note short wire position)
Install the 100k Ohm resistor in rows 2 and 7
Connect the battery to the battery connector
Push the button to see the LED turn on.
Install the 330 Ohm resistor in rows 2 and 7
Push the button to see the LED turn on.
1) Did you get the LED to turn on?
2) What was the difference between the 100k and 330 Ohm resistors?
3) Does the orientation of the resistor matter?
4) Does the orientation of the LED matter?
5) What happens if you put a wire in the wrong row (i.e. black wire in row 12 instead of 11)?
6) What happens if you put a wire in the wrong column (i.e. black wire in column “g” instead of “h”)?
Worksheet
Worksheet
2 LED Circuit Classroom Presentation r1.pptxElectronics Resistor-LED Circuit Worksheet 2 r2.pdfPage updated
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