Electrostatics Chapter 32. 32.1 Electrical forces and Charges Electrical forces are from _________...

31
Electrostatics Chapter 32

Transcript of Electrostatics Chapter 32. 32.1 Electrical forces and Charges Electrical forces are from _________...

Electrostatics

Chapter 32

32.1 Electrical forces and Charges

• Electrical forces are from _________

• _______ attract & _____ repel

32.1 Cont’

• The charge of the particles are either ______ (protons) or ________ (electrons)

The atom

• Positive center

• Electrons are the same #

• Neutral Atom

32.3 Coulomb’s Law

• States that the relationship between _______ and ______will determine the force present.

• Unit for charge is the coulomb (C)

Coulombs' Law

Static

• Electrons ________ from one object to another.

• Remember opposites attract.

32.4 Conductors and Insulators• What is a conductor?

• What are some examples of good conductors?

• What are some examples of good insulators?

Electric Current

Chapter 34

Voltage Sources

• For charges to flow you need a ____________ and a _____ for the charge

• Can you name a voltage source?–battery, generator

Current vs. Voltage• ________ or charge flows

through a circuit

• ________ is the reason why it flows, it does not move

• _______ causes ________

Analogy for Voltage v. Current

34.4 Electric Resistance

• This is how well a ________ works.

• __________ is ability of a conductor to allow a charge to go through

• Also thickness or length influence _________

34.5 Ohm’s Law

• ____ is a unit for resistance (Ω)

• _______ is a unit for current (AMP)

34.6 Ohm’s Law and Electric Shock

• Your ability to get shocked depends on your condition to a certain extent.

Electrocuted!

• People die from 120V charges every year

• Electricity disrupts normal nerve function

• Also it damages tissues

Electric Shock cont’

• How do birds stand on wires?• What is the third prong on a

plug for?

34.11 Electric Power

• The rate that electrical energy is converted to another form of energy.

• Electric power= ______ X _____

Or• 1 Watt=1 amp X 1 volt

Types of electric current

• DC ____________ - current travels in ____________. Voltage source is a battery

• AC _______________ – current that repeatedly ______________, twice each cycle. Voltage source is a generator

Electric Circuits

Chapter 35

35.2 Electric Circuits

• A ______ is a path that electricity can flow through

• There can be no gaps or ______

35.3 Series Circuits

• The current flows through a number of things in one path.

Series Circuits Requirements

• 1. Current has ____ path

• 2. There is ______ from each device on the line.

• 3. It abides by ______ Law

Series Requirements Cont’

• 4. Each device abides by ______ Law

• 5. Total _______ in each device adds up to the total voltage of the ________.

What does a book series have in common with a series circuit?

Series Disadvantage

• One thing goes out…they all go out.

• Winter Lights

35.4 Parallel Circuits

• Each device on the circuit has its ________ and then they connect at two points

Parallel Circuit Requirement• 1. each device connects to the

______ two points• 2. Ohm’s law applies _________

to each branch

Parallel Requirements cont’

• 3. total ________= sum of currents in parallel branches

• 4. as # of parallel _________ increase total current through battery increases.

35.5 Schematic Diagrams

• A way to write a circuit on paper.

Schematic Diagrams