### Physics 10 Chapter 13 - Electrostatics - 10

 1.    Write down the statement of Coulomb’s law?a) F = k (q1 x q2) / r2 b) F = k (q1 / q2) x r2c) F = k (q1 x q2) x r2d) F = k (q1 / q2) / r2
 2.    According to Coulomb’s law, what happens to the attraction of two oppositely charged objects as their distance of separation increases?a) Increases b) Cannot be determinedc) Decreasesd) Remains unchanged
 3.    What is ‘F’ in the formula of Coulomb’s law?a) F is proportionality constant b) F is the force between the two chargesc) F is Faraday’s constantd) F is permittivity of space
 4. What is ‘q1’ in the formula of Coulomb’s law?a) Coulomb’s force b) Forcec) Quantity of charge on a bodyd) Proportionality constant
 5. What is ‘q2’ in the formula of Coulomb’s law?a) Coulomb’s force b) Quantity of charge on a bodyc) Proportionality constantd) Force
 6.    What is ‘r’ in the formula of Coulomb’s law?a) Distance between the two charges b) Radius of the chargec) Proportionality constantd) Radius of the body
 7.    What is ‘r’ in the formula of Coulomb’s law?a) Distance between the two charges b) Proportionality constantc) Radius of the bodyd) Kinetic energy
 8.    What is the value of ‘K’?a) K = 4πεo / 2 b) K = 1 / 4πεoc) K = 1 + 4πεod) K = 4πεo
 9.    Upon which of the following, the value of ‘K’ depends?a) The medium between the two charges b) System of units in which F, q and r are measuredc) All of thesed) The permittivity of space
 10.    When was the fundamental law of electric force between two stationary charged particles established?a) 1758 b) 1785c) 1875d) 1857
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