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1.A particle of charge ​q​ and mass ​m​ experiences a uniform electric field ​E​. If the...

1.A particle of charge ​q​ and mass ​m​ experiences a uniform electric field ​E​. If the particle starts at rest, find

(a) its speed after it has travelled a distance ​d​ and
(b) the magnitude of the electric potential difference through which it passed

2. Find the electric field of a uniformly charged solid sphere both inside and outside the sphere if the total charge is ​Q​0​ and the radius of the sphere is ​d​.

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