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CBSE Class 12-science Answered

obtain an expression showing the relation between the current density in a current carrying conductor the is drift velocity the number of free electrons per unit volume and the electronic charge  derive an expression for drift velocity of free electrons
Asked by awanishraj254 | 30 Dec, 2018, 10:46: PM
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Click on the link given below for the answer. 
Drift velocity of free electrons
Answered by Shiwani Sawant | 31 Dec, 2018, 12:51: PM

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CBSE 12-science - Physics
I don't know which concept and formula is used
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Asked by adityagalar2007 | 06 Apr, 2024, 01:06: PM
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CBSE 12-science - Physics
what is the mass of the bidy
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CBSE 12-science - Physics
a charge of 2microcoulomb experience a force of 6N when placed at a point in an electric field .find electric field at that point
Asked by manishamunda787 | 02 Apr, 2024, 11:07: AM
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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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Asked by kalsichaitanya | 30 Dec, 2023, 04:08: PM
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CBSE 12-science - Physics
1st
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Asked by evachauhan15 | 29 Dec, 2023, 10:25: AM
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CBSE 12-science - Physics
what is electric field intensity? What is its S.I unit?
Asked by glorialyanzaw | 13 Oct, 2023, 05:53: PM
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CBSE 12-science - Physics
answer
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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})
Asked by arjunsah797 | 01 Apr, 2022, 07:31: AM
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