static electricity Flashcards
charge of proton
1.6x10^-19C
charge of neutron
0
charge of electron
-1.6x10^-19C
explain what is ions?
ions is when atoms has more/less electrons
what are conductors?
conductors are materials with lots of “free moving” electrons (metals)
whats are insulators?
insulators are materials with no free moving electrons (rubber, plastic, wood)
3 types of charging
- charging by friction
- charging by contact
- charging by induction
which can be transferred? protons or electrons
only electrons can move
what are positive ions?
protons > electrons
what are negative ions
electrons > protons
similarities of charging by friction and charging by contact
both objects must be in contact
difference of charging by friction and charging by contact
- In contact, objects are not moving. In friction, objects are moving.
2, In contact, both objects will end up with same charge. In friction, One will be positively charge while the other willl be negatively charged
if a piece of cloth becomes +10C charged after it is used to scrub an acrylic rod. What is the charge on the rod?
-10C
how to stay safe during a storm?
do not stay in an open space or stand under a tree
how is lightning formed?
During a storm, if the bottom of the cloud is negatively charged, it causes the ground and the top of the cloud to be positively charged. When the charge is sufficiently large, an electric current flows either within the cloud or from the cloud to the ground. The flash of light we see if due to the heat produced as the current flow through the air. We call this lightning. The air aound the lightning expands rapidly and creates a loud bang also known as thunder
location of nuetrons, protons and electrons
neutrons and protons: nucleus
electrons: shell
purpose of electrostatic precipitator
can remove very small and dangerous dust particles. It does so by allowing dirty air to flow through a negatively charged wire. The dust particles in the air becomes charged by contact and are then attracted to metal plates on earth
