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physics objective Questions and Answers with explanation and solutions

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Physics - Electrostatics Questions and Answer >>

1 2 3  Page 1 of 3 pages (14 Objective Questions)

1. An electron enters between two horizontal plates separated by 2 mm and having a p.d. of 1000 V. The force on electron is. [JIPMER 1999]


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2. A sphere of radius 1 em has potential of 8000 V, then energy density near its surface will be


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3. A charged oil drop is to be held stationary between two plates separated by a distance of 25mm . If the mass of the drop is 5 x 10-15 kg and the charge on it is l0-18   C the potential to be applied between the two plates is (g = 10 ms-2)


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4. Electric charges of + 10μ, +5μC, - 3μC and + 8μC are placed at the corners of a square of side √2 m. The potential at the centre of the square is


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5. Two metal spheres of radii R1 and R2 are charged to the same potential. The ratio of charges on the spheres


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