EMF Flashcards
(22 cards)
An observable object that is experiencing a force due to the presence of the field
Test body
Properties around the space of a mass that enables it to exert a force on other masses
Gravitational fields
Property around the space of a charged object that enables it to exert forces on other charged objects
Electric fields
Positively charged objects____electrons,
negatively charged objects_____electrons
Lose, gain
The S I unit for charge
Coulomb
The S I unit for electric current
Ampere
How do you calculate electric force?
FE = EQ
A property around the space of the magnet or electric current that enables it to exert forces on other magnets or electric current
Magnetic fields
It is caused by moving charged particles within the liquid outer core
Magnetic field
It protects life from solar wind cosmic rays
Magnetic field
High speed Ionized particles emitted from the sun
Solar wind
High speed ionize particles rmitted from outside our solar system
Cosmic rays
Caused by the high-speed ionized particles entering the earth atmosphere
Northern lights
Lines that describe the direction and magnitude of the force around a field
Field lines
True or false. N -> S
True
True or false. Electric motors convert electrical energy to mechanical energy
True
The part of the motor or generator that spins. Made of a rotating shaft with the wire coiled around it
Armature
Part of the spinning Armature that provides electrical contact with the brushes
Commutator
The stationary part of the motor that provides electrical contact with commutator
Brushes
Provide the force is needed to spin the Armature
Magnets
True or false. AC current = to slip rings, DC current = split ring
True
An invisible connection between a source and the test body
Field
