Electric charge and Coulomb's law problems

1. 1A glass rod rubbed with silk acquires a charge of 8 x 10^-12 C. The number of electrons it has gained or lost is __________.

   1. A5 x 10^-7 (gained)
   2. B5 x 10^-7 (lost)
   3. C2 x 10^-8 (lost)
   4. D-8 x 10^-12 (lost)
2. 2The electrostatic force between two point charges kept at a distance "d" apart in a medium of εr = 6, is 0.3 N. The force between them at the same separation in vacuum is __________.
   
   

   1. A20 N
   2. B0.5 N
   3. C1.8 N
   4. D2 N

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Higher School Certificate(HSC ) Physics Test sobre Sin título, creado por Susanna Marian C el 25/12/2015.

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Susanna Marian C

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English

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physicshigher school certificate(hsc )

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