magnetic force acting on straight wire carring an electric current placed in a magnetic filed Flashcards
the magnetic force acting on straghit wire carring an electric current plased normally in magnetic filed debends on
and waht is the relation and unit
and what is the seta
- mahnetic flux density of the external magnet F & B
- the electric current intensity F & I
- the angle between the wire and the external magnetic flux lins F & SIN seta
- length of the wire F & L
NOTE , only the length which affected by the external magnetic flux lines
- F = Bex x I x L x SIN seta
- Newten
- seta between the wire and the magnetic flux lines
diff magnetic flux density at a point
it is equel numerocally the magnetic force acting on a wire 1M long carrying electric current of 1A placed perpendicular to the magnetic filed at this point
use of fleming left hand rule and how to use
- to determination the direction the magnetic force acting on straghit wire carrying an electric current placed perpendculer in a magnetic filed
- thump for force
- fore finger to magnetic filed
- middle finger to current
when the force be zero
and when be maxmium
- when the wire parallel to the magnetic flux lines
- when the wire perpendculer to the magnetic flux lines
the dirction of the force act on straghit wire carrying an electric current plased normally in an extrnal magnetic filed depends on
- the direction of the electric current
- the dirction of the extrnal of the external magnetic filed
at given dirction force act on a straghit wire tell me aboyt the dirction of the motion of the following
- if the extrnal magnetic filed reverced
- if the dirction of the electric current reversed
- if the extrnal magnetic filed and electric current reversed
- the force reversed
- the force reversed
- will not change
if the electrric current flows through both a solenoid and straghit wire coinciding with the axis of the coil there is no magnetic force acting on wire GR
because the magnetic filed associated to flowing of electric current in solenoid is shaped as closed bathes parallel to the its axis so strghit wire coinciding with the axis parallel to the magnetic flux lines
seta = zero , SINseta = zero , F = BILSINseta = zero
the relation of the mutual force between ywo wires carring electric current each of length (L) ( constant ) at distrance (X) from each other
F1 = F2 = µ x I1 x I2 \ 2πX
NOTE
L is the common length of the two wires
tell me the ratio of the mutual force relation
the magnetic permapelty F&µ
the firct electric current F&I2
the srcound electric current F&I2
the common length F&L
the distance between them F&1/X
a straight wire carrying an electric current placed normally in a magnetic filed is forced
- magnetic filed as concebtric circles is formed around the wire when an electric current passes
- when the wire is placed normally in an extrnal magnetic filled the two magnetic fields will be in same direction in one side so their resultant will increases and repulsion takes place , while they will be in opposite direction in the other side so their resultant will decease and attraction take place
a straghit wire carring an electric current placed in a magnetic filled may not be forced GR
if the wire is plassed parallel to the magnetic flux lines
set = zero , SIN set =0 , F=BILSINseta = 0
if an electric current flows through both a solenoid and a straight wire coinciding with the axis of the coil there is no magnetic force acting on the wire
because the magnetic filed associated to flowing of electric current in solenoid is shaped as closed bathes parallel to its axis inside the solenoid so straight wire coinciding with the axis is parallel to the magnetic flux lines
seta = zero
SINseta = zero
F = B X I x L x sin SETA = ZERO
