What are electric fields?
A field is the area over which a force acts, so an electric field is an area over which an electrical force acts.
what produces electrical fields
charged particles
Describe the diagram version of an electric field
charged particle
lines represent the field
arrows show direction a positive charge would move
the closer the lines are, the stronger the field
objects with a similar charge…
repel
objects with different charges…
attract
to charge an object we can use..
friction
if two insulators are rubbed together…
electrons transfer from one to the other
how do you ‘charge up’ an electron
use friction
give it more negative energy
what creates an ability for attraction to happen
electrons move to a different side of an atom
we can charge the ruler with the cloth to create enough friction - creating the ability for attraction, the paper is then…
attracted to the ruler because they have different charges
what are the parts of the vande graaff generator
dome
combs
belt
motor
insulator comb
in a vande graaff generator, what turns the belt
motor
in a vande graaff generator, what does the insulator comb (at the bottom) do
charges the belt due to friction
in a vande graaff generator, what does the top comb do
transfers charge to the dome
in a vande graaff generator, the charge passes to…
whoevers touching it, leaving hair charged and repelling itself
