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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Two identical He-filled spherical balloons each carrying a charge q are tied to a weight W with strings and float in equlibrium, as shown in figure. (i) Find the magnitude of q, assuming that the charge on each balloon acts as if it were concentrated at the center. (ii) Find the volume of each balloon. Take the density of He as ρHe and the density of air as ρa . Ignore the weight of the unfilled balloons .

Two identical He-filled spherical balloons each carrying a charge q are tied to a weight W with strings and float in equlibrium, as shown in figure. (i) Find the magnitude of q, assuming that the charge on each balloon acts as if it were concentrated at the center. (ii) Find the volume of each balloon. Take the density of He as ρHe and the density of air as ρa . Ignore the weight of the unfilled balloons .

and q3 as shown in figure. (i) Find the magnitude of q at the vertices of n equilateral triangle of side l. what is the force on a charge Q placed at the centroid of the triangle? Consider three charges q1 each equal to q q2 Two identical He-filled spherical balloons each carrying a charge q are tied to a weight W with strings and float in equlibrium