# Principles of Technology

## Electrical Resistance (4:3)

### Vocabulary (pages 63-71)

Define electrical resistance

"Electrical resistance is the net result of ____________________________________
"

"...the energy given to the atoms shows up as _____________________________________
"

Resistance - unifying equation

Voltage

Current

Ohm's Law

Formula for wire resistance (and define the variables)

What is the resistivity value of glass? ________________ Copper? ________________

Which would you use as a conductor?

Resistor

Semiconductors

Insulators

Resistors in series (formula)

Resistors in parallel (formula)

Variable resistor

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