Electricty Flashcards
Where are electrical charges
everywhere
What produces electrical fields
Charged objects
How many protons and electrons are in a half millimeter crystal
69 Quintillion
Why doesn’t everything exhibit electrical characteristics
Large numbers of evenly distributed charge
What is Static Electricity
an accumulation of like charges in one place
What is electrical current
Large numbers of like charges flow together in some direction
What does the word static come from
A Greek word meaning standing still or at rest
What is the first way of accumulating charges
Friction
What is a second way charges can accumulate
Conduction
What is third way of accumulating charges
Induction
What are metals called that have high electrical conductivity called
Conductors
What are substance that do not conduct energy called
Insolators
What is electrical ground
A neutrally charged object or thing
What is static discharge
When a large enough electric field will ionize nearby air forming a conducting channel that results i sparks or static or static discharge
What happens during static discharge
Study with mom
What is O3
Ozone
What are channels of negative charges called
leaders
Study what causes lightning
ook
What are a channel of positive ground ions called
streamers
What is a return strike
the lightening crack
How many amps can there be in a lightening strike
30k to 100k
What is induction
Static electricity accumulating when a charged object comes near another object forcing the charges in the second object to crowd together
What is electric current
flowing charges in wires which are negative electrons
What are conducting electrons
Freely moving electrictrons
What is electric current very similar to
The movement of water through pipes
What is a filiment
That lil wire in a light bulb
What is a resistor
Any device that makes in the circuit that makes it harder for current to flow
What causes electric current to flow
Voltage difference is the negative and positive terminals of the battery
What direction does electricity flow
backwards
What is mathematically identical to positive charges flowing toward negative
Electrons flowing toward positive
W Hat is a coulombs
a measure of electric current
What are the two forms electrical fields can take
Spherical and parallel
