Survey

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Geomagnetic storm wikipedia, lookup

Maxwell's equations wikipedia, lookup

Magnetic monopole wikipedia, lookup

Giant magnetoresistance wikipedia, lookup

Electrical resistance and conductance wikipedia, lookup

Magnetotactic bacteria wikipedia, lookup

Earth's magnetic field wikipedia, lookup

Magnetometer wikipedia, lookup

Electromotive force wikipedia, lookup

Mathematical descriptions of the electromagnetic field wikipedia, lookup

Skin effect wikipedia, lookup

Magnetoreception wikipedia, lookup

Magnetochemistry wikipedia, lookup

Lorentz force wikipedia, lookup

Magnetotellurics wikipedia, lookup

Electromagnetic field wikipedia, lookup

Friction-plate electromagnetic couplings wikipedia, lookup

Ferrofluid wikipedia, lookup

Magnetohydrodynamics wikipedia, lookup

Multiferroics wikipedia, lookup

Magnet wikipedia, lookup

Electromagnetism wikipedia, lookup

Force between magnets wikipedia, lookup

Ferromagnetism wikipedia, lookup

Magnetism wikipedia, lookup

Alternating current wikipedia, lookup

Electricity wikipedia, lookup

History of electromagnetic theory wikipedia, lookup

Electric machine wikipedia, lookup

History of electrochemistry wikipedia, lookup

Superconducting magnet wikipedia, lookup

History of geomagnetism wikipedia, lookup

Electromagnet wikipedia, lookup

Transcript
```Magnetism 4
Electricity and Magnetism Related
Hans Christian Oersted
Discovered that an electric current causes a
magnetic field
How?
Connected a series circuit
and turned on the power. A
nearby compass moved!
This Proved
there was an
Discovered that a magnetic field causes
an electrical current.
How?
Moved a wire through the
magnetic field of a strong
magnet. Found that an
electric current was produced
in the wire.
Electromagnet
Temporary magnet made by wrapping a current
carrying wire around an iron core.
More power
More coils = ____________
More power
More current = ____________
Galvanometer
Moving coil electric current detector.
The amount of deflection of a needle attached to
the coil is proportional to the current passing
through the coil.
Galvanometer
The accuracy of moving coil meters is
dependent upon.….
Having a uniform and constant magnetic field
```
Related documents