Wednesday 5 June 2013

A positively-charged particle (alpha-particle) projected towards west is deflected towards north by a magnetic field

Q. No 3:  A positively-charged particle (alpha-particle) projected towards west is deflected towards north by a magnetic field. The direction of magnetic field is
(a) towards south  (b) towards east
(c) downward        (d) upward
Ans:
     (d) The direction of the magnetic field can be determined by the Fleming’s left hand rule. According to Fleming’s left hand rule if we stretch the thumb, the centre finger and the middle finger of our left hand such that they are mutually perpendicular to each other. If the centre finger gives the direction of current and middle finger points in the direction of magnetic field then the thumb points towards the direction of the force or motion of the conductor.
Here the direction of positively charged alpha particle is towards west this implies the direction of current is also towards west and the direction of magnetic force is towards north. Hence, according to Fleming’s left hand rule, the direction of magnetic field will be upwards.
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16 comments:

  1. arjun20 September 2013 at 01:23

    THe middle figers shows THe Direstion OF current AND not Fore Finger

    ReplyDelete
  2. Unknown24 October 2014 at 01:14

    cant we use flemings right hand rule for this

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    Replies
    1. Unknown13 March 2018 at 07:55

      No that is used for electromagnetic induction...

      Delete
    2. Unknown29 July 2018 at 03:12

      No, you illiterate shit

      Delete
    3. Unknown30 August 2018 at 03:52

      No it can be used only in electromagnetic induction

      Delete
  3. Unknown4 July 2015 at 06:56

    I'm not getting dis ans sir plz explain by giving the figure of Fleming's left hand rule according to dis ques.

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    Replies
    1. ЁЯШОЁЯШО23 September 2018 at 17:47

      This comment has been removed by the author.

      Delete
    2. Unknown17 November 2018 at 00:36

      No one is illiterate here u shit ra buffalo

      Delete
  4. Anonymous29 August 2015 at 03:17

    The direction of current is towards east as it is an alpha particle (positively charged) and electrons are negatively charged. Now apply the left hand rule.

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  5. Unknown4 August 2016 at 10:32

    Hey! It's a perfect answer . The alpha particles are positively charged and hence opposite to electron movement.Simolarly the current also moves opposite to direction of electrons. So there direction is same

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  6. Unknown25 August 2016 at 07:57

    U can make it simple

    ReplyDelete
  7. Unknown22 June 2018 at 07:01

    Correct answer...

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  8. Unknown12 July 2018 at 02:21

    Der is an error

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  9. Unknown12 July 2018 at 02:23

    Middle finger shows direction of current and fore finger shows direction of magnetic field.

    ReplyDelete
  10. Unknown3 June 2019 at 22:52

    6 years later the we stil have a question.... what came first, the chicken or the egg???

    ReplyDelete
    Replies
    1. Unknown18 August 2019 at 00:48

      Hen came first .. as . The protein which . Can make egg shells .. are found in them .. only

      Delete

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