an unmagnetized iron bar
a magnetized iron bar
a moving electric charge
a stationary electric charge
D. a stationary electric charge
The current flow through space around a permanent magnet
The force set up when current flows through a conductor
The force that drives current through a resistor
The force between the plates of a charged capacitor
Hans Christian Oersted
Sir Charles Wheatstone
Georg Ohm
James Clerk Maxwell
Number of turns of coil
Magnetomotive force
Flux density in the circuit
Current in the coil
63000 N
63 × 10^-3 N
8 × 10^12 N
796 kN
Is determined by the rate of current flux
Is found by the right hand rule
Is found by the left hand rule
Always opposes the cause producing it
diamagnetic
paramagnetic
ferromagnetic
non-magnetic
Tesia
Weber
Ampere- turn
Maxwell
Breakdown voltage
Electric intensity
Potential gradient
Dielectric constant
Becomes weaker
Becomes stronger
Reverses in direction
is unchanged
32, 32
32, 42
42, 32
34, 34
Dielectric strength
Electric intensity
Potential gradient
Dielectric constant
30 ohms
20 ohms
15 ohms
7 ohms
air
wood
silicon steel
soft iron
Curie temperature
Inferred absolute temperature
Room temperature
Absolute temperature
Outer shell electrons
Inner shell electrons
Semiconductor electrons
Valence electrons
Magnetic field
Electric field
Electromagnetic field
Free Space Field
Very much greater than permeability of air
Slightly greater than permeability of air
Slightly less than permeability of air
Equal to the permeability of air
diamagnetic
ferromagnetic
paramagnetic
non-magnetic
Radio frequency
Audio frequency
Power supply
Power transformer
1/218 per oC
1/252 peroC
1/272 per oC
1/273 per oC
permeability
ferromagnetism
reluctance of core
hysteresis loss
Helium
Hydrogen
Boron
Oxygen
Joule's Law
Coulomb's Law
Faraday's first law of electromagnetic induction
Faraday's second law of electromagnetic induction
R esistance
Conductance
Permeance
I nductance
Law of conservation of charge
Coulomb's first law
Coulomb's second law
Law of conservation of energy
Because air is a gas
Because air has the highest relative permeability
Because air is a conductor of magnetic flux
Because air has the lowest relative permeability
Aluminum
Silver
Air
Cobalt
Michael Faraday
Andre Ampere
Hans Christian Oersted
Gustav Robert Kirchhoff
soft iron
silicon steel
hard steel
wrought iron