Electrodynamics Flashcards
1
Q
Electromagnetism
A
A magnetic field exists around a permanent magnet or a current carrying conductor
2
Q
Motors
A
Convert electrical energy into mechanical energy
3
Q
Magnetic flux density
A
A representation of the magnitude and direction of the magnetic field
4
Q
Magnetic flux linkage
A
The product of the number of turns on the coil and the flux through the coil
5
Q
Faraday’s Law
A
The emf induced is directly proportional to the rate of xhange of magnetic flux
6
Q
Lenz’s Law
A
The induced current flows in a direction so as to set up a magnetic field to oppose the change in magnetic flux
7
Q
Generators
A
Convert mechanical energy into electrical energy
8
Q
Ideal transformer
A
Input power is equal to output power
9
Q
Diode
A
A component that only allows current to flow in one direction
