Voltage, Current & Resistance
Step 2 of 4
"Why does the horn get weak when the battery is low? That's voltage dropping."
The Three Musketeers of Electricity
Voltage = Push (pressure in pipe)
Current = Flow (amount of water)
Resistance = Blockage (narrow pipe)
Higher voltage = louder horn. More resistance = less current. It's all about balance.
Your bike's battery provides the voltage (typically 12V), the wires carry the current, and the components (like lights and horn) provide resistance.
🎙️ Listen to Explanation
In this lesson, you'll learn:
- How voltage, current, and resistance relate to each other
- Ohm's Law: V = I × R (Voltage = Current × Resistance)
- How to protect your circuits from too much current
- Why your bike's electrical components need specific voltages
🧩 Circuit Simulation
Adjust the voltage and resistance to see how they affect current and your LED. Watch out for the fuse!
6V
10Ω
Fuse OK
LED
Current flowing: 0.60 Amps
Remember: Current (I) = Voltage (V) / Resistance (R)
Your fuse blows at > 1.5 Amps
❓ Quiz
Which of these causes current to reduce?