Help with Electricity?

Question

hi i'm doing electricity in school right now for grade 9 science and i kind of need a little help understanding some stuff. How do we know when we bring say an ebonite rod near a pithball, how would we draw the stuff happening, i don't understand the the positives and negatives go from the rod to the pithball or the other way around, can someone help me out

Answer 1

OK let's see if I am on the right track
the Rod has been charged with either + or - electrons. So this creates a field around the end of the rod. Now the pith balls will either be attracted to or rejected by the field.
So draw a field around the rod for example show it - electrons then the pith are + so as the rod is placed closer the balls want to be attracted to the rod, and if the rod were + the balls rejected.
This is due to a simple force of physics called opposites attract, Goes the same for dating...
so a + will always attract a - and a + reject a +.

to show it draw a circle around the end of the rod and the balls, then the rod doesn't touch the same charged parts yet they move apart. like an invisible wall around the rod and balls..Get it, hope so. Good luck