Connect an LED, two AA batteries, and a resistor of around 100-150 ohms, all in series.
If the LED doesn't light, then turn either the LED or the batteries around in the circuit.
If a circuit requires an IR LED, it requires an IR LED, there is no replacement. If a circuit does not require an IR LED, there is no need to look for a replacement.
To build a simple circuit, you need a power source (such as a battery), a conducting material (like wires or conductive tape), and a load component (such as an LED). Connecting these elements in a closed loop allows the flow of electricity and for the circuit to function.
I have never heard of an electrical term "build" in an electrical circuit.
the function of an led is to give of light coming through an electrical circuit
Sure. If you want sound when the circuit is energized, use a buzzer. If you want a visual indication when the circuit is energized, use an LED.
I bought: reed switch LED Buzzer Button (On/Off) Resistor (if necessary) I connected: <---Button------Reed switch------Resistor (if necessary)------LED------Buzzer---Batteries--->
led to 250 watts bulb
The lighting of the LED indicates that there is an electric current flowing through the circuit and that the LED is functioning properly. It shows that the circuit is complete and the components are properly connected to allow for the illumination of the LED.
The things needed to build a circuit are:Circuit elements like resistor capacitors, inductors etcConnectors (cables)A source
It probably means LED leads, which are the two wires sticking out from the LED that connect it to the circuit.
series
Three main components that are needed to build a circuit will be a power source. This supplies the circuit with a voltage to operate. A load to make the current flow through the circuit, and conductors to join these two devices together to carry the current.