The figure shows tracks of three charged particles in a uniform electrostatic fiels. Give the signs of threes charges. Which particle has the highest charge to mass ratio?
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Consider the charges q,q, and -q placed at the vertices of an equilateral triangle as shown in the figure. What is the force on each charge? '(##VPU_HSS_PHY_XII_CO1_E01_007_Q01##)'

Which among the curves shown in figures cannot possibly represent electrostatic field lines? '(##VPU_HSS_PHY_XII_CO1_E02_026_Q01##)'

A point charge +10 muC is a distance 5cm directly above the centre of a square of side 10cm as shown in the figure. What is the magnitude of the electric flux through the square? [Hint: Think of the square as one face of cube with edge 10cm]. '(##VPU_HSS_PHY_XII_CO1_E02_018_Q01##)'