Static electricity Flashcards
lightbulbs
uses energy
Ammeter
measures how fast the electrons flow
voltmeter
measures electrons energy difference
resistor
device used to slow down current and uses energy
resistance
taking away current and energy
wire
pathway for electrons
battery
energy storage
gives energy to electrons
switch
control of circuit
friction
rubbing two materials together and electrons are trasnferred between them
- one material has a strong hold on electrons
- will get electrons and it will become negative
one material has weaker hold on electrons
- will give electrons and it will become positive
contact
touching two objects together and electrons jump between them
-electrons will jump to an object if they have more room
-contact produces similar charges
negative + neutral = attract
negative + negative = repel
positive + neutral = attract
positive + positive = repel
grounding
Removing charge by contacting the ground
series circuit
current is the same in the whole circuit
voltage id divided up between all lightbulbs
one pathway for electrons to flow
equation = IT = I1 = I2 = I3 = etc.
VT = V1 + V2 + V3 + etc.
Parallel circuits
current of battery is divided up between branches (paths)
equation = IT = I1 + I2 + I3 + etc.
voltage of battery is equal to the voltage of each branch
equation = VT = V1 = V2 = V3 = etc.
it has 2 or more branches for electrons to flow
ohm’s law
ohm’s law is the relationship between resistance, current and voltage
equation = R = V/I
Electrostatic series
A list of materials and how they relate to each other based on hold on electrons.
Ebonite strong neg.
plastic
fur weak pos.
ebonite + fur = strong charge
plastic + fur = weak charge
the farther apart the two materials are the stronger the charge
