🎯 Learning Intention

I will apply Ohm’s Law and technician-safety practices to understand how electrical energy moves through a computer system.

✅ Success Criteria

• I can explain voltage, current, and resistance using correct units.
• I can calculate one value when given the other two (V = I × R).
• I can identify common electrical and thermal hazards in IT work.

🌍 Why We’re Learning This

Every device you’ll ever repair relies on safe power flow.

Knowing how electricity behaves protects both you and the equipment you’re trusted to service.

⏰ Warm-Up (10 min)

“Think of a time a piece of tech overheated, sparked, or stopped working.

What safety step could have prevented it?”

Students share one quick idea, then write the three variables:

V = voltage (volts), I = current (amps), R = resistance (ohms).

🧠 Mini-Lesson (20 min) — Understanding Ohm’s Law

1. Review the Technician Safety Triangle: Electrical • Thermal • Environmental.

2. Explain Ohm’s Law:V=I×R

   V=I×RV = I \times R

   • Voltage (V): the push.
   • Current (I): the flow.
   • Resistance (R): the slowdown.

3. Show sample calculations:

   • If V = 12 V and R = 4 Ω, then I = 3 A.
   • If I = 2 A and R = 6 Ω, then V = 12 V.