P4.1 - electrical charges and fields

Question 1

static electricity

Answer 1

-electric charge stored on insulated objects

Question 2

charge by friction

Answer 2

-friction
-electrons are transferred = charged objects
-charges want to flow and dissipate to ground

Question 3

electric fields

Answer 3

-2 charged objects exert a non-contact force on each other
-objects create a field around itself

Question 4

force between 2 objects increases

Answer 4

as distance decreases and they get closer

Question 5

line of force in an electric field

Answer 5

-line along which a free positive charge moves along in an electric field

Question 6

line of force in positively charged objects

Answer 6

-point away from centre
-force directed away

Question 7

line of force in negatively charged objects

Answer 7

-line point towards centre
-force directed inwards

Question 8

line of force in 2 charged objects

Answer 8

-positive particles moves towards negative particles

Question 9

sparks occur when

Answer 9

-electrons are pulled out of air by force
-hit other air molecules and knock electrons out
-creates sudden flow of electrons in 2 charged objects