# Principles of Technology

## Electrical Work (2:3)

### Vocabulary (pages 65-72)

Electron

Charge

Coulomb

How many electrons are in 1 coulomb?

V

q

Units of electrical work

What is the relationship between Joules and Newton·meters

Formula for electrical work (and solve using the units)

Formula for electrical charge (and solve using the units)

Formula for electrical efficiency (and solve using the units)

How much work is needed to recharge a dead 12 volt battery if it can
hold 24,000 coulombs of charge?

Nathan is using a 110 volt AC Skilsaw which draws 13 amps. He operates
it for 2 minutes while attempting to cut out some plywood shelving. Assuming
he doesn't cut off his foot in the process, how much charge is moved, and
how much work is done moving it?

Return To Principles of Technology
Index

Return to GeoMan's Home Page