:) 001-005 EE

What is a magnet?

Objects that display magnetic phenomena

What is the magnet first called?

Lodestone which is inspired by the word Lodestar

What is the magnetic field?

magnetic field is represented by magnetic flux lines

What are other terms for magnet flux?

Lines of force
flux lines

What is the unit for flux lines?

Maxwell (Mx)

How many maxwell in 1 weber (Wb)?

1 Wb = 1×10^8 Mx

What is Permeability?

Measure of how easily a magnetic lines can travel through a material
Opposite of Reluctance

What is the unit for permeability? (mew)

Weber / Ampere-meter

What is Permeance?

Property of material to allow magnetic flux to be established in a material?

What is relative permeability?

Ratio of permeability of material with that of free space

What are types of magnetic materials?

Non-magnetic
Diamagnetic
Paramagnetic
Ferromagnetic

What is the relative permeability of all magnetic materials type?

What is susceptibility?

What are the two movements of flux lines in a magnet?

What is intrusion?

Used in shielding electrical equipments

How does one create magnetic field?

Hans Christian Oersted

How to determine the direction of the magnetic field?

By using the right hand rule

How to determine the direction of the magnetic field in a current carrying conductor?

By using the right hand thumb rule

How does an electromagnet work?

What is magnetic flux Density?

Flux lines per unit area

What are the units for magnetic Flux dennsity?

T or Wb/m² , G or Mx/cm²