Why Does Electricity Work?
Electricity introduces charge, field, current, resistance, impedance, and dimensional bookkeeping.
The question
What is charge doing when a circuit transfers energy?
Beginner explanation
Students usually begin electricity with voltage, current, resistance, and Ohm’s law.
Ohm’s law says that voltage equals current multiplied by resistance.
The formula works, but it does not by itself explain what kind of physical quantities voltage, current, and resistance are.
QMU doorway
QMU separates electrostatic charge and magnetic charge into an explicit ledger.
This is useful for examining impedance, flux, resistance, and field relations.
The unit curl is a strong starting node because it connects magnetic charge, electron mass, length, and field structure.
Equation to investigate
Work the idea
- Start with Ohm’s law: V = IR.
- Voltage can be understood as energy per charge.
- Current can be understood as charge flow per time.
- Resistance tells how strongly a circuit opposes that flow.
- The QMU doorway asks students to track the units rather than only memorize the formula.
What this shows
The lesson result is that electricity becomes clearer when each term is treated as a measurable dimensional relationship. QMU extends this idea by making charge, magnetic charge, flux, resistance, and impedance explicit ledger quantities.
What you should have learned
- Ohm’s law relates voltage, current, and resistance.
- Voltage means energy per charge.
- Current means charge flow per time.
- QMU encourages students to track what each electrical unit actually measures.
Student challenge
Write Ohm’s law, then define voltage, current, and resistance in words before using the equation.