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Coulomb's law (C. de Coulomb)
The primary law for electrostatics is analogues to Newton's law of universal gravitation. This states that the force among two point charges is proportional to the algebraic product of their respective charges in addition to proportional to the inverse square of the distance among them; mathematically specking,
F = 1/(4 pi epsilon0) (q Q/r2) e,
where q and Q refer to the strengths of the two charges, r refer the distance among the two, and e refer to a unit vector directed from the test charge to the second.
Permittivity of free space; electric constant; epsilon_0 The ratio of the electric displacement to the intensity of the electric field generating it in vacuum. This is equal to
concave grating and rowland''s mounting theory
Printing Paper Industry: Synchronous motors are used in grinders. DC drives are used for pumping pulp and refining it.
unlike Parallel forces
When we move from a positive charge towards an equal negative charge along the line joining the two then initially potential reduces in magnitude and at centre changes into zero, b
A trick with surface tension Get a used tin can and make five holes in it with a nail. The holes should be very close to the bottom of the can and about five millimetres apart.
what is the difference between diplacement and distance
Yes it is possible at the centre of the earth where the radius is zero .
to draw v-t graph with variable retardation
An electron is in a box of width 3*10^-10m.what are de broglies wavelength and magnitude of momentum of the electron if it is in A)n=1 level B)n=2 level C)n=3 level Ans) Use the
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