static electricity

Question 1

electric force

Answer 1

attractive or repulsive force that electric charges exert on one another

Question 2

electric field

Answer 2

region in which an electric charge experiences an electric force

Question 3

electrical insulators

Answer 3

charged particles are not free to move about

charged by friction (contact made)

Question 4

electrical conductor

Answer 4

charged particles are free to move about

charged by induction (not touching)

Question 5

earthing/earth

Answer 5

can take or give negative charges while still remaining neutral

Question 6

direction of an electric field

Answer 6

direction of the force that would act on a small positive charge

Question 7

strength of electric field

Answer 7

indicated by how close the field lines are to one another

closer- stronger

Question 8

hazards of electrostatic

Answer 8

lightning - thunderclouds become electrically charged due to friction between water molecules in the thundercloud and air particles in the atm, negatively charged underside of the clouds repels the electrons near the earth surface which becomes positively charged
electrostatic discharge - cause sparks and ignite flammable items thus they have metal chain that hangs close to the ground to provide earthing path

Question 9

practical applications

Answer 9

photocopier
electrostatic precipitators
spray paint