a) How do we know if electrons moving in a certain region of space are being deflected by an electric field or a magnetic field (or both)? (b) Why is iron magnetic and wood not? (c) Dropping an iron magnet on hard ground weakens it. Why?
(a) How do we know if electrons moving in a certain region of space are being deflected by an electric field or a magnetic field (or both)?
(b) Why is iron magnetic and wood not?
(c) Dropping an iron magnet on hard ground weakens it. Why?
a)
The electrons moving in a certain region of space are being deflected by an electric field or a magnetic field can be determined by the Lorentz force i.e.
this equation shows that if any charge particle is under Electric or magnetic field then the particle will experience some force. Electron is an elementary charge particle hence an electron under electric or magnetic field gets deflected.
b)
In iron most of the electrons spin in the same direction and these spinning electrons are responsible for the magnetic charactarestics of the iron but in wood there is no electron spins in the same direction so there is not any magnetic property in the wood hence the Iron experiences the magnetic influence but wood has no magnetic properties so wood is not Magnetic.
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