Card Set Information
If charges that are the same repel each other...
Charges that are different attract each other
attraction or repulsion
around a charged object.
buildup of charges but don't flow continuously
what 3 ways can an object become charged?
friction, conduction, induction
What happens if a negatively charged object and a positively charged object are brought together?
Electrons transfer until both objects have the same charge
loss of static electricity, transfer from one to another
flow of electric charges
A complete no damaged path to which charges flow
What causes a current in an electric circuit?
The difference in potenrial energy, two places
A device, creates potential difference in electric circuit
The greater the resistance...
The less current there is for a voltage
Stored in chemical compounds
Substances change into new substances
What was the first battery?
layered zinc, paper soaked in salt water, and silver
Transforms chem. energy into elec. energy
Two different metals
conducts electric circuit
connect a cell to a circuit
Two electrochemical in a series
chemical reaction s occur between what?
The electrodes and the electrolytes in the electrochemical cell
what are the features of a circuit?
Circuits run by e. energy, source or e. energy, connected by conducting wires
one electric circuit path
other paths to take
energy is transferred
how can you calculate the power of a light bulb or an stove etc.?
Power = Voltage × Current
How do you know how much you have to pay for energy?
Energy = power times time
least resistance path
protect people from shock
alternate path for current
how do you prevent circuits from overheating
fuses and circuit breakers
reusable safety switch
an object can only become charged when electrons transfer to one place to another
conservation of charge
the measure of how difficult it is it flow through