Electricity Concepts

Question 1

charge

Answer 1

Force between objects
electrical force > gravitational force
opposite charges attract, like charges repel
amber charged to attract materials

Question 2

conductor

Answer 2

outer, valence electrons have weak bonds to their nuclei

Question 3

insulator

Answer 3

outer electrons are tightly bound to nuclei

Question 4

semiconductor

Answer 4

between insulator and conductor

Question 5

current

Answer 5

rate of flow of charge
rate at which electrons flow through a conductor
charge flows in a current
capable of transferring power
amperes/amps (A)

Question 6

voltage

Answer 6

change in potential energy experienced by a charge
energy transferred / unit of charge
electric potential difference (Alessandro Volta, inventor of battery)

Question 7

power

Answer 7

rate energy is transformed or transferred over time
joules/second or watts

Question 8

Coulomb’s Law

Answer 8

compute forces between static charges

Question 9

demand

Answer 9

instantaneous amount of work required