32.1 Electrical forces and Charges
• Electrical forces are from _________
• _______ attract & _____ repel
32.3 Coulomb’s Law
• States that the relationship between _______ and ______will determine the force present.
• Unit for charge is the coulomb (C)
32.4 Conductors and Insulators• What is a conductor?
• What are some examples of good conductors?
• What are some examples of good insulators?
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 ________
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 _________
34.6 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
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
35.2 Electric Circuits
• A ______ is a path that electricity can flow through
• There can be no gaps or ______
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 ________.
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.