Electrician Jobsite English & Troubleshooting

Voltage, Current, Resistance, and Power

Turn formulas into intuition: voltage pushes, current flows, resistance limits, and power becomes heat or work.

Page highlights

Use V=I×R and P=V×I to explain loads.
Understand why current and heating are tightly related.
Connect meter readings with circuit state.
Voltage is the pushing difference; current is what actually flows through the load.
More power means more energy per unit time, so heating matters.
A load is not abstract; it is a lamp, heater, motor, or charger.

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