Electricity Chapter 1&2 Study Cards Flashcards
(23 cards)
neutral
objects with a positive and negative charge
charge separation
when charged objects are brought close to neutral objects.
laws of electrical charges
opposite charges attract each other
like charges repel
static electricity
stops and does not flow
current electricity
electricity flows continuously
circuit
complete path that controls the flow of electricity
Current
“I”
measured in amps
voltage
“V”
measured in volts
“potential energy”
resistance
“R”
measured in ohms
conductors
materials that allow and electrical charge to move through easily
ex. metal
insulators
does not allow electricity to flow through easily
ex. wood/ rubber
fuses
help prevent electric shocks and overloads
melts if too much current passes through it
dry cells
chemicals are in a paste
chemical reaction releases free electrons
wet cells
includes two electrodes and a liquid electrolyte
usually an avid and zinc and copper
primary cells
chemical reactions cannot be reversed
rechargeable cells
chemical reactions can be reversed and the cell can be recharged
“secondary cells”
battery
made of multiple cells
superconductors
are perfect and have no resistance to electron flow
resistor
allows electric current to pass but provides resistance to it
rheostat
can increase or decrease the amount of current in a circuit by adjusting the portion of the resister the current travels through
schematic
plan/ drawing of a circuit
parallel circuit
each component has its own path for current
series circuit
there is only one path for current
