How many electrons should be removed fro...

How many electrons should be removed from a coin of mass 1.6 g, so that it may float in an electric field of intensity `10^9NC^-1` directed upward.

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MODERN PUBLICATION-ELECTRIC FIELD-EXERCISE

A water particle of mass 10 mg and having a charge of 1.5 xx 10^-6C st...
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An electron above the earth is balanced by the gravitational force and...
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How many electrons should be removed from a coin of mass 1.6 g, so tha...
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Find the time taken by a particle of mass 10^-18 kg and carrying a cha...
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An electron is released with a velocity of 5xx10^6ms^-1 in an electric...
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A charged particle of mass 1 g is suspended through a silk thread of l...
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Two points charges of +20 muC and + 80 muC are plaed 18 cm apart. Find...
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Two point charges of - 16 muC and + 80 muC are placed 8 cm apart. Find...
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Shown in the figure <b> four point charges at the corners of a square...
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Three charges, each equal to q, are placed at the three corners of a s...
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Four charges +q'+q' - q and -q are placed respe tively at the four cro...
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ABC is an equilateral triangle of side 5 cm. Charges of +60statC and -...
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Two point charges of 2muC but opposte in sign are placed 10 cm apart. ...
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Two charges eacdh of 0.1muC but opposite in sign are 1 mm apart. What ...
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Two charges +-10muC are placed 5.0 mm apart. Determine the electric fi...
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Two charges +-10muC are placed 5.0 mm apart. Determine the electric fi...
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The electric field at a point on the axial line at a distance of 10 cm...
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An electric dipole of dipole moment 4xx 10^-5C m is placed in a unifor...
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An electric dipole with diple moment 4xx10^-9C m is aligned at 30^@ wi...
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A dipole consisting of an electron and a proton separated by a distanc...
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