A mind map for magnatic lecture. A magnet is an object (generally a metal) that has a north and south pole, such that opposite poles attract and like poles repel. A magnet contains electrons that have both uneven orbits and uneven spins.
Similar Mind Maps
Magnetic Field Lines
the direction of the tangent to a magnetic field line at any point gives the direction of B at that point .
the spacing of the lines represents the magnitude of B the magnetic field is stronger where the lines are closer together.
The magnitude and direction of FB depend on the velocity and on the magnitude and direction of the magnetic ﬁeld
When a charged particle moves parallel to the magnetic ﬁeld vector, the magnetic force acting on the particle is zero
The magnitude and direction of FB depend on the velocity of the particle and on the magnitude and direction of the magnetic ﬁeld B.
magnetic field is vector quantity
the IS unit of manatic field is Tesla (T)
Induction and Inductance
Faraday’s law of Induction
An emf is induced in a loop each time the magnetic field changes
The law states that an emf is induced in the loop each time the number of magnetic field lines that pass through it changes.
This law is used to find the direction of the induced current:
the direction of the induced emf is the same as the direction of the induced current.
Inductors and Inductance
1- Resistive Load
2- Capacitive Load
3- Inductive Load
iLand vL are 90° out of phase.
The Series RLC Circuit
Magnetic Fields due to Currents
The vector dB is perpendicular to ds and to unit vector directed from ds toward P.
The magnitude of dB is inversely proportional to r2
The magnitude of dB is proportional to the current and to the magnitude ds of the length element ds.
The magnitude of dB is proportional to sin