Electricity and Energy Flashcards
Is voltage measured in series or parallel
parallel
is current measured in series
yes
what is Ohm’s law
voltage across a resistor = current in a resistor x resistance of the resistor
when is voltage split
in series
when is voltage the same
in paralell
when is current split
in paralell
when is current the same
in series
what happens when you open a switch in series
the circuit is broken
what is the formula for power in terms of energy and time
P=E/t
what is the formula for power in terms of voltage and current
P=IV
Units for voltage
volts
units for current
amps
units for resistance
ohms
units for power
watts
units for energy
joules
units for time
seconds
voltage…
determines the energy supplied to each electron
current…
determines the number of electrons in a current
what is the rsistance of an ammeter
Almost nonexistent
what is the resistance of a voltmeter
Infinite
define kinetic energy
the energy an object possesses by being in motion
what is the formula for kinetic energy
Ek=1/2m(v squared)
what is gravitational potential
the energy gained while rising to a height
what is the formula for gravitational potential energy
Ep=mgh
