Question no 16 specially second part 16 with the help of a labelled circuit diagram wire describ an - Science - Magnetic Effects of Electric Current

Question

Question no 16 specially second part

16   w i t h   t h e   h e l p   o f   a
  l a b e l l e d   c i r c u i t   d i a g r a m
  w i r e   d e s c r i b   a n   a c t i v i t
y   t o   i l l u s t r a t e t h e   p a t t e r n
  o f   t h e   m a g n e c t i c   f i e l d
  l i n e s   a r o u n d   a   s t r a i g h t
  c u r r e n t   c a r r y i n g   l o n g c o n d
u c t i n g i i )   I s   t h e r e   a   s i m
i l a r   m a g n e c t i c   f i e l d   p r o d u
c e d   a r o u n d   a   t h i n   b e a m
  o f   m o v i n g       a )   a l p
h a   p a r t i c a l s   a n d     b )  
n e u t r o n s ?   j u s t i f y   y o u r   a n s
w e r

Anshu Agrawal · Accepted Answer

Dear
student,

(a) Take a battery , a
variable resistance,, a plug key and a long straight thick copper
wire

(b) Insert the thick
wire through the centre, normal to the plane of a rectangular
cardboard

(c) Connect the copper
wire vertically between X and Y as shown in series with battery, a
plug key and a rheostat

(d) Sprinkle some iron
filings uniformly on the cardboard

(e Close the key so that
a current flows through the wire Gently tap the cardboard a few
times Observe the pattern of the iron filings

(i) To find the direction of
magnetic field lines, place a compass at a point P over a circle
and observe the direction of the needle The direction of north pole
of the compass would give the direction of magnetic field lines
Maxwell's Right Hand Thumb Rule is used to find the direction of
magnetic field lines It states that "Imagine you are holding a
current carrying conductor in your right hand such that the thumb
points in the direction of current Then your fingers will wrap
around the conductor in the direction of the magnetic field lines
"

(ii)

In case of movement of a
charged particle the magnetic field is created around the path on
which the charged particle moves
(i) Yes, a thin beam of a-particles (which are positively charged)
is like straight conductor carrying current in the direction of
motion
(ii) No, as neutrons carry no charge so no magnetic field would be
created around its path

Regards