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CBSE Class 12 Science Free Doubts and Solutions

CBSE - XII Science - Physics

two charges q1 and q2 are placed at (2,0) and (-2,0) respectively. q1=q2=1microcoloumb. three points 1,2 and 3 are situated (3,0),(0,-2) and (-2,3) respectively. find electric force at the three points

Asked by my3shyll 23rd April 2018, 6:23 PM
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CBSE - XII Science - Physics

two charged particles are placed at a distance of 1.0 cm apart. what is the minimum possible magnitude of the electric force acting on each charge?

Asked by haroonrashidgkp 22nd April 2018, 7:55 PM
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CBSE - XII Science - Physics

why does a dipole experiences force and torque when placed in non-uniform electric field. also when it will be placed in uniform will it be experiencing net force or torque or both. answer in detail and dont provide links

Asked by haroonrashidgkp 22nd April 2018, 12:12 PM
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CBSE - XII Science - Mathematics

Lim x->0 (tan x- sin x)/x^3=? Can you explain this question  in shortcut way?

Asked by Ravikumar 20th April 2018, 9:30 PM
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CBSE - XII Science - Physics

what is the net flux of the uniform electric field of exercise 1.15 ncert through a cube of side 20 cm oriented so that it faces are parallel to the planes ? 

Asked by vssf88 20th April 2018, 8:25 PM
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CBSE - XII Science - Physics

At what separation should two equal charges , 1.0 C each, be placed so that the force between them equals  the weight of a 50 kg person

Asked by haroonrashidgkp 20th April 2018, 11:26 AM
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CBSE - XII Science - Physics

Find the elctric force between two protons separated at a separation of 1 fermi . the protons in a nucleus remain at a separation of this order. 

Asked by haroonrashidgkp 19th April 2018, 8:51 PM
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