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High School/JEE/NEET/IPhO Physics | 17-19 Yrs

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  1.  
    2. sir are these lecture sufficient for neet from zero level
    11 months ago by

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  2.  
    3. what is the relation with field
    1 years ago by

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  3.  
    4. thanks sir
    2 years ago by

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  4.  
    5. when electric field does work why doesn't stored field energy decrease?
    4 years ago by Ameya Marakarkandy

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  5.  
    6. sir, what is the electrostatic field energy associated with a point charge?
    6 years ago by Kumud Singh

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  6.  
    7. A point charge q is brought from infinity (slowly so that heat developed in the shell is negligible) and is placed at the centre of a conducting neutral spherical shell of inner radius a and outer radius b then work done by the external agent will be
    8 years ago by nikhil gupta
    Ans 1 ->
    Please sir give me the proper explanation it is a good question
    8 years ago by nikhil gupta
    Ans 2 ->
    integrate work done from infinity to zero. i think the answer will be INFINITE
    8 years ago by Prateek Kumawat

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  7.  
    8. respected sir i understood whole electrostatics very nicely after learning from you. i was able to solve variety of numerical problems from various books. in this question why we are integrating dU from a to 2a instead it should be integrated within the limits O to 2a as EF and EF energy also exist inside inner sphere also?
    8 years ago by harshvardhan shukla

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  8.  
    9. sir why we are taking radius of inner and outer elemental ring as ''x'' they should be taken different as the radius of outer elemental ring is greater than that of inner elemental ring?
    8 years ago by harshvardhan shukla
    Ans 1 ->
    It's just a variable which vanishes after substitution of the limits of integration u assume it different
    5 years ago by deependra kapoor

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  9.  
    10. Sir can the kinetic energy of a positive charge placed in a electric field will always increase or in some cases will remain same??sir what will those cases
    8 years ago by mohit gupta

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  10.  
    11. Sir why work done by elect pressure 'dw'not equal to negative of dU because work done by cons force = -delta U
    8 years ago by Mohak Sharma

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  11.  
    12. for instance the energy of a sphere is 1/(8p?_0 ) q^2/r if the charge is uniformly distributed over the surface it is greater i.e. 3/(20p?_0 ) q^2/r why? generally it should take the minimum potential energy but why it it greater
    9 years ago by srinivas

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  12.  
    13. I AM NOT ABLE TO WATCH VIDEO LECTURES ON THE SITE
    9 years ago by SIDDHARTH GANDHI
    Ans 1 ->
    All of our video lectures are working properly... in case of a problem pl mail to info@physicsgalaxy.com
    9 years ago by Physics Galaxy
    Ans 2 ->
    Sir why work done by elect pressure 'dw'not equal to negative of dU because work done by cons force = -delta U
    8 years ago by Mohak Sharma

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  13.  
    14. ry to ask but ...cud u pleas tell us why...in the definition of potential diff. we hve to bring the chrge unaacelerated??i mean wat wud be the diiff if the external agent accelerates the chrged particle in the prsence of an electric field..(consider that from infinity the ext agent has accelerated the particle such that net change in kinetic energy is zero i.e delta K.E. is zero b/w final point and infinty.......thnks alott in advanced...?
    10 years ago by overdozed
    Ans 1 ->
    If charge accelerates then the work done will also be consumed in imparting kinetic energy of the charge and the def states that work done per unit charge is the potential difference will not be valid...... Even if final KE is zero then it may be due to some other non conservative forces... so thats also not valid..
    9 years ago by Physics Galaxy

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