Himanshi posted an Question
August 12, 2021 • 11:34 am 30 points
  • IIT JAM
  • Physics (PH)

Hlo can somebody explain me why do we need a charge ,kaise field bna,iski kya need thi and field se fir energy,can somebody me a practical view,no mathematical

hlo can somebody explain me why do we need a charge ,kaise field bna,iski kya need thi and field se fir energy,can somebody me a practical view,no mathematical one

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  • Isha lohan 1

    well, as far as i understand your doubt, i think you are asking about how electric field is formed by electron. Ryt? well if this is your question then i may not be able to explain it well, we have been considering it as intrinsic property of a free charge that wherever there is charge, it has it's own electric field which is said to be extending to infinity in theoretical concepts. it is something similar to that wherever there is heavy mass, it has its gravitational field around it in space and time.

  • Isha lohan 1 best-answer

    Typically we say that we need a charge to create electric or magnetic field. Stationary charge will create electric field and moving charge will create a time varying electric field ( i.e. A filed which keeps changing with time). And a time varying electric field will create a magnetic field in space. The energy of the electric field, this is a very good question, As you know that we feel gravity and due to it we have gravitational energy, similarly when we have electric field in space, it posses energy. As any already present field apply force on any charge brought into that field thus we say that the electric field is a type of force field, and when it apply force there occurs displacement. And from our basic knowledge of work energy concepts we know that work is done when force causes some displacement. This shows that it has energy. Ask if any doubts.

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    but the picture of practical formation of electric field by electrons and other charges whats all happening ki ek field bni jo kaafi door tak extend krti h Pula question yhi h aur work energy is clr

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    deeper question.

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    mam from i can get that how it is created by electron.and mam also for every part suggest me good books so that I can build concepts.guide me well.have u given iit jam

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    for EMT jam if you are a first year student then you have sufficient time to study emt form Griffith's book. it is the best book for electrodynamics.

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