# How things work college course/Electricity and Field theory/Quiz

## Ideas for Electronics conceptual

1. current as electrons per second
2. voltage as potential energy per electron
3. potential energy as mgh AND/OR qV
4. bulbs and batteries: which bulb is dim?
5. ohm's law always true? (e.g. what about temperature effects)
6. parallel versus series
7. ideal versus actual batteries
8. resistance across a perfect ohmeter
9. current through a perfect voltmeter
10. hydrodynamic analog current, voltage, capacitor, membrane, energy in capacitor and inductor

## 20 questions #3

1 When you drop a rock just above Earth's surface, the downward force is called the ______ and the equation describing the force is _____

 gravitational potential ... mgh gravitational field ... mgh gravitational potential ... mg gravitational field ... mg gravitational potential energy ... mgh

2 If a battery is used to power a light bulb, the force is called the ______ and the equation describing the force is _____

 electric field ... qE electric potential ... qEℓ gravitational field;...mg electric potential ... mg electric potential energy ... mg

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