Troubleshooting a circuit

Write down what your circuit should do, then what it actually does. “The lamp stays off” is a useful observation. It gives you something specific to investigate.

With power disconnected, compare your build to your kit’s instructions. Follow every connection. Is there a gap? Is a wire in the intended place? Is each component facing the right way? Some components, such as LEDs, need a particular orientation.

Choose one possible explanation. Make one change, then test again using your kit’s instructions. Record what changed. If you change everything at once, it is harder to learn what helped.

Ask an adult if you are unsure. Disconnect power immediately if a component gets hot, smells unusual, or appears damaged. Only use an age-appropriate low-voltage kit; never experiment with wall outlets.