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CLASS – XII, SUB – PHYSICS, , REVISION SET- 01, , TIME – 2 Hr., F.M. – 100, ,  All questions are compulsory : 1), 2), 3), 4), , What do you mean by surface charge density and write S.I. Unit ?, No two electric field lines can intersect each other. Why ?, State Gauss's theorem. Express it mathematically., Calculate the resistance of two coils if their equivalent resistance in series and parallel, are respectively 18 Ω and 4Ω., 5) Sketch neat and clean diagram of Van de graaf generator and Explain., 6) Why Coulomb's force is Central force ?, 7) What do you mean by Coulomb's law and write its Vector form ?, 8) What is Electric Dipole moment. Find Expression for Torque when dipole placed in, uniform electric field ?, 9) Find expression for electric field at axial position of electric dipole ?, 10) Write two factors on which Capacitance depends., 11) Find Expression for Capacitance for parallel plate capacitor., 12) Write down properties of electric field lines., 13) What will be work done in charging 20μF Capacitor to 500 volt., 14) Write down Kirchoff's current law and Kirchoff's voltage law., 15) Draw diagram for series and parallel Combination of two resistors., 16) Write two properties of equipotential surfaces., 17) Write S.I. unit and Dimension of Coulomb's Constant (K)., 18) Three equal charges of same magnitude placed on three corners of equilateral, triangle. Find net Coulomb force on 1C charge placed on centroid of Triangle., 19) On which factors resistance depends.