I will measure voltage, current, and resistance using a multimeter and apply Ohm’s Law to interpret those measurements safely and accurately.

✅ Success Criteria

• I can set up a multimeter to read V, A, and Ω correctly.
• I can calculate missing values using the Ohm’s Wheel (V = I × R).
• I can explain how measuring components helps technicians diagnose electrical problems.

🌍 Why We’re Learning This

Every IT professional eventually faces hardware that fails because of bad power, bad connections, or bad resistance.

Multimeters are the stethoscope of technicians — today you’ll learn how to “listen” to electricity.

⏰ Warm-Up (10 min)

“What do you think electricity looks like inside a computer?”

Write 2–3 sentences, then sketch a simple “path” of power moving from the PSU to the motherboard.

Label one component that uses voltage at a specific level (ex: 12V rail → GPU).

🧠 Mini-Lesson (15 min) — The Multimeter: Your Technician Toolkit

Live demonstration or projected steps:

1. The Three Main Measurements

• Voltage (V): the push — measured across components.
• Current (A): the flow — measured through the circuit.
• Resistance (Ω): how much a component slows the current.

2. Dial Settings to Know