physics quiz Flashcards
process of generating an electric current in a conductor by changing the magnetic field around it?
ELECTROMAGNETIC INDUCTION
measure of the total magentic field passing through a given surface
MAGNETIC FLUX
an electric field created by changing magnetic field
INDUCED ELECTRIC FIELD
a law stating that the induced voltage in a coil is proportional to the charge of magnetic flux through the coil
FARADAYS LAW OF INDUCTION
when an electric current flows in conductive wire it will generate a small magnetic field around it
AMPERE LAW
coiling a wire wrapped in magnetic object
SOLENOID
once a current flows through the coil, it wil create a bigger magnetic field ads the magnetic domains line up
ELECTROMAGNET
more turns of coil
MORE MAGNETIC FIELD
it will act as a magnet with polarity
MAGNETIZED SOLENOID
what happens if you switch the source of charge or the flow of current
CHANGE POLARITY OF SOLENOID
process of producing an induced electromotive force due to a change in magnetic flux
ELECTROMAGNETIC INDUCTION
who discovered electromagnetic induction
MICHAEL FARADAY
when did micahel faraday discover em induction
1831
he described electromagnetic induction mathematically
JAMES CLERK MAXWELL
what id james clerk maxwell described
FARADAYS LAW OF INDUCTION
the induced voltage is directly proportional to the _______ of the wire
NUMBER OF COILS
\ affects induced voltage
CHANGING MAGNETIC FIELDS
states that the indiced electromotive force in a closed loop equal to the rate of change of magnetic flux through the loop
FARADAYS LAW
E denotation meaning
ELECTROMOTIVE FORCE
omega denotation meaning
MAGNETIC FLUX
n denotation meaning
NUMBER OF TURNS
magnetic strip that carries personal information as a form of voltage signals
ELECTROMAGNETIC INDUCTIONm
magnetic flux formula
BA COS THETA
theta value if parallel
90 degrees
