MAGNETIC FIELD by Luigi Cacurri https://padlet.com/luigicacurri99/tla9l3cwz44s REALIZATED BY CACCAMO ROSARIO, CACURRI LUIGI AND SEMINARA DANILO en-us 2017-05-26 15:45:27 UTC 2026-03-07 01:01:17 UTC hello@padlet.com LORENZ FORCE luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174010033 2017-05-26 15:48:09 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174010033 HALL'S EFFECT luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174010194 A foil traveled by current is inserted in a field in order to the direction of the current be perpendicular at the direction of the plane; between his borders there is a potential different due to Lorenz force which acts on the charge's bearers.]]> 2017-05-26 15:48:49 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174010194 HALL'S VOLTAGE luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174010248 ∆V=dvB
Hall's voltage is directly proportional at magnetic field. Thanks to Hall effect we can measure the intensity of magnetic field starting from a potetnional different.

]]> 2017-05-26 15:49:06 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174010248 MAGNETIC FIELD luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174010583 2017-05-26 15:50:27 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174010583 MOTION OF A CHARGE IN A UNIFORM MAGNETIC FIELD luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174010906 2017-05-26 15:52:15 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174010906 SPECIFIC CHARGE OF ELECTRON luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174011148 2017-05-26 15:53:25 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174011148 FLOW OF MAGNETIC FIELD VECTOR luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174011902 2017-05-26 15:56:31 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174011902 GAUSS THEOREM FOR MAGNETISM luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174012598 2017-05-26 15:58:05 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174012598 luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174015017 The magnetic field is generated by electric charges in movement, who in turn electric charges in movement are subject to forces when there are in a magnetic field.]]> 2017-05-26 16:11:27 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174015017 luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174016001 Punctiform charge q that moves with a speed v in a magnetic field vector B conveys the force Fq given by the formula:
             Fq= qv x B
called lorenz force.]]> 2017-05-26 16:16:42 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174016001 LORENZ FORCE: luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174017566
  • is exercitated by a mgnetic field on a charge q in movement with speed v.
  • his modulus is F=qvBsenα where α is the angle included between v and B.
  • his direction is perpendicular to the plane defined by vecto r v and B.
  • his way is given by right hand's rule: if the charge is positive, head towards the thumb in the way of velocity; if is negative head towards the thumb in the opposite way of velocity.
  • can modify the direction of the charge, but can't change the value of velocity because is perpendicular to the immediate movement of the charge.
    • ]]>     2017-05-26 16:26:34 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174017566     luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174023499
  • Is the ratio between the modulus of the elementary charge e, equal to electron one, and his mass.
  • the value obtained by Thomson in 1897 was 1,7 x 10^-11.
    • ]]>     2017-05-26 17:05:35 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174023499     luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174024647
  • if the surface is plain and the magnetic field is uniform, is Φs(B) = B S = BS cos α: is positive, if the field lines exit from the positive face of the surface, negative if enter in it.
  • if the surface curved and magnetic field changes on the surface, is ΦΩ(B) = ∑ Bi ∆Si.
  • the unit of measure is weber.
    • ]]>     2017-05-26 17:12:31 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174024647     luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174026908 the flow of magnetic field through any closed surface is null: ΦΩ(B) = 0]]> 2017-05-26 17:26:41 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174026908 CIRCULATION OF MAGNETIC FIELD luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174027462 2017-05-26 17:30:09 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174027462 luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174027637 the fotmula of circulation of magnetic field is   Γ(B) = ∑ Bj ∆lj]]> 2017-05-26 17:31:23 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174027637 luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174029925 2017-05-26 17:45:52 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174029925 luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174066238 2017-05-27 04:54:05 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174066238 AMPERE THEOREM luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174066306
    The circulation of the magnetic field along any close way L is directry proportional to the linked currents with L.

    ]]>     2017-05-27 04:57:18 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174066306     luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174066432 2017-05-27 05:05:13 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174066432 luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174066461 2017-05-27 05:07:26 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174066461 luigicacurri99 https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174066493 In a magnetic field, a charged particle with starting speed perpendicular to field lines makes a uniform circular movement, where the centripetal force is subsituted by Lorenz force]]> 2017-05-27 05:09:59 UTC https://padlet.com/luigicacurri99/tla9l3cwz44s/wish/174066493