energy & electricity Flashcards
(11 cards)
what are the 9 types of stored energy?
kinetic
gpe
thermal
electric
chemical
elastic potential
nuclear
light
sound
whats the unit of measurement for energy?
joule (j)
whats the energy that cant be created or destroyed only transferred?
the law of conservation
how to calculate efficiency?
efficiency= useful energy out
———————— x100
energy in
what’s the unit of measurement for current?
amps (A)
whats the current?
the flow of electrons in a circuit
how to describe the current in a series/parallel circuit?
series-the same throughout all components
parallel-current is shared into different branches
define potential difference?
the measure of the difference in electrical energy between 2 points in a circuit
whats the measurement for potential difference?
volts (v)
whats ohms law?
the relationship between voltage,current and resistance in a circuit
V=I x R
what are the methods of electricity?
solar
hydroelectric
nuclear
geothermal
biomass
wind turbines
fossil fuels
