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CBSE Class 12-science Answered

DO A CHARGED BODY EXERT FORCE ON UNCHARGED BODY ? IF YES WHY ?  
Asked by salujavinit123 | 24 Mar, 2019, 04:47: PM
answered-by-expert Expert Answer
Yes it can, charge body will always produce electric field in its surround if we place any charge body in its vicinity that body will experience a force. But when we place a uncharged body it will also experience some electrostatic force. Uncharged body means its net charge is zero that means number of electrons and protons are same, but when we place this uncharged body near the charge body there will be appearance of charge due induction method of charging . This can result into interactions between these bodies. Or in more technical term due polarisation there will be a force.
Answered by Ankit K | 24 Mar, 2019, 10:26: PM

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CBSE 12-science - Physics
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CBSE 12-science - Physics
d derive an expression for electric field intensity due to uniformly charged ring on it axix
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CBSE 12-science - Physics
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CBSE 12-science - Physics
an infinite line charge produces a field of 9×10^4 N/C at a distance of 2 cm calculate the linear charge
Asked by srishtijha944 | 15 Jul, 2022, 09:55: PM
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CBSE 12-science - Physics
Three charges \( 1 \mathrm{C},-1 \mathrm{C} \), and \( 2 \mathrm{C} \) are kept on \( X \) axis \( -5 \mathrm{~cm}, x=0 \mathrm{~cm} \) amd \( x=10 \mathrm{~cm} \) respectively find net force one each of them
Asked by marshelojigas | 28 Jun, 2022, 06:46: AM
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CBSE 12-science - Physics
ln a Millikan’s oil drop experiment, the horizontal plates are 1.5 cm apart. With the electric field switch off an oil drop is observed to fall with a steady velocity of 2.5×10^{-2}  cm  s^{-1}.  When the field is switched on the upper plate being positive, the drop just remains stationary when the   p.d.   between the plates is 1500 V. Calculate the radius of drop (b) How many electronic charges does it carry? (c)If the   p.d. between the two plates remains unchanged, with what velocity will the drop move when it has collected two more as a result of exposure to ionising radiation? (Oil density, rho=900 kgm^{3} , Viscosity of air,   eta =1.8×10^{-5} Nsm^{-2}, Density of air,  σ=1.293  kg  m^{-3})
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