Topic 3

Question 1

Closed circuit

Answer 1

complete path where electricity travels

Question 2

Conductors

Answer 2

obj with loosely bound particles and allow magnetic/electric current to flow freely through them

Question 3

Discharging

Answer 3

when a charged obj loses charge to air; charge transfers to/from air until obj is neutral.
Can cause spark/shock

Question 4

Electric current

Answer 4

continuous flow of electric charge through conductor, measured in Amperes
Electric charge usually carried by moving electrons in a wire
Only through closed circuit
Current goes low PE → high PE

Question 5

Insulators

Answer 5

obj with tightly bound particles and resist magnetic/electric current

Question 6

Source charge

Answer 6

charged particle that creates electric field

Question 7

Static electricity

Answer 7

the buildup of charges on an obj

Question 8

Voltage

Answer 8

force causing current to flow, measured in V
Difference in electrical PE per charge
V = I * R
(current * resistance), (A * ꭥ)

Question 9

conduction

Answer 9

contact, obj with more (-) transfers (-) to other obj

Question 10

friction

Answer 10

contact, motion
objs rub and transfer (-)

Question 11

induction

Answer 11

noncontact
electric field of A repels similarly charged B
B ends up with buildup of charges on other side
electrons leave atoms

Question 12

polarization

Answer 12

noncontact
electric field of A repels similarly charged B
electrons stays in atoms