In figure, the capacitances are C1 = 1.0 µF and C2 = 3.0 µF, and both capacitors are charged to a potential difference of V = 100 V but with opposite polarity as shown. Switches S1 and S2 are now closed. a) What is now the potential difference between point a and b? What now is the charge on capacitor b) 1 and c) 2 ? 3. + + ++ + C2 ++ + + S2

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Water constitutes about 70% of earth.  Some important distinguishing properties of water are high molar concentration, small dissociation constant and high dielectric constant.

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An electrostatic force is a force caused by stationary electric charges /fields. The electrostatic force is caused by the transfer of electrons in conducting materials. Coulomb’s law determines the amount of force between two stationary, charged particles. The electric force is the force which acts between two stationary charges. It is also called Coulomb force.