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Electrostatics.. numericals 1)two positive charges distant 0.1 m apart , repel each other with a force of 18 N. If the sum of the two charges be 9 micro-coulomb then calculate their separate values

Answer»

lomb's law of force between two electrically charged particles :          q₁ , q₂ = electric CHARGES on the two particles.            r = distance between two particles = 0.1 m       the particles are assumed to be point SIZED.          Force F = 18 N          q₁ + q₂ = 9 μ C    --- (1)   SOLVE the two EQUATIONS to get the values of charges.      q₁ (9 - q₁) = 20      q₁² - 9 q₁ + 20 = 0        (q₁ - 5) (q₁ - 4) = 0       q₁ = 5 μ C  or  4 μ C       q₂  = 4 μ C  or  5 μ C



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