Circuit Sparks Smart Electrical Tutor

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CIRCUIT SPARKS Smart Electrical Tutor Ask, calculate and learn electrical engineering directly inside your browser. Free • No Login • No API • No Subscription Explore Electrical Engineering Ohm's Law Capacitor Transformer 3-Phase Power Power Factor Motor Protection Earthing CIRCUIT SPARKS TUTOR Hello! I am a free browser-based electrical engineering tutor. You can ask questions such as: • What is power factor? • Explain capacitor charging. • Difference between kW and kVA. • Why is a transformer rated in kVA? • Calculate current for 12 V and 6 ohm. • Calculate three-phase power for 415 V, 10 A and PF 0.8. No internet AI service or API key is required. ...
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Circuit Sparks - Build a Glowing Night Lamp

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Circuit Sparks - Build a Glowing Night Lamp

Help Maya and Arjun build a safe LED circuit. Pick the components in the correct order and bring the lamp to life.
Maya First, we need a safe power source. Which component should we pick?
Build Progress Score: 0
Night Lamp Workbench
+ - 9 V 330 ohm Switch LED Wire
Choose the next component
Pick the correct first component.
★ ★ ★

Night Lamp Powered Successfully!

Excellent work. You built a complete LED circuit and safely limited the current with a resistor.

What did we build?

A 9 V source powers an LED through a current-limiting resistor.

For an example LED forward voltage of about 2 V:
Current = (9 V - 2 V) / 330 ohm
This gives approximately:
0.021 A, or about 21 mA

This is a simplified educational example. Real component ratings should always be checked before constructing a physical circuit.
© Amogha A K. All Rights Reserved.

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