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Two parallel plates having a p.d. of 200V among them are spaced 0.8mm apart.
What is the electric field strength?
Find also the flux density when the dielectric among the plates is
(a) Air and
(b) Polythene of relative permittivity 2.3
An electron is constrained to the central perpendicular axis of a ring of charge of radius 2.2 m and charge 0.015 mC. See Section 22-6. Suppose the electron is released from rest a
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