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f-alpha.net » Electronics » Basic Electronics » Resistor » Let's go... » Experiment 3 - Heat Generation

Experiment 3 - The Heat Generation at the Resistor

Exactly this is what the resistors in your experiments do as well. For this build the circuit shown.

Circuit with resistor. (Enlarge)

Experimental set-up (Enlarge)

Hold the resistor loosely between your fingers and press the pushbutton switch. After a few seconds you notice the heating up of the resistor.

Repeat the experiment with a resistor of 4,7 kΩ. The resistor hardly heats up.

 

Circuit diagram for heat generation at a resistor.

Accordingly, a resistor with a resistance lower than 330 Ω would heat more? You take a closer look in the next experiment...

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