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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Three charges q, q, and -2q are fixed on the vertices of an equilateral triangular plate of edge length a. This plate is in equilibrium two very large plates having surface charge density sigma1 and sigma2 respectively. Find the time period of small angular oscillation about an axis passing through its centroid and perpendicular to the plane . Moment of interia of the system about this axis is l.

Three charges q, q, and -2q are fixed on the vertices of an equilateral triangular plate of edge length a. This plate is in equilibrium two very large plates having surface charge density sigma1 and sigma2 respectively. Find the time period of small angular oscillation about an axis passing through its centroid and perpendicular to the plane . Moment of interia of the system about this axis is l.

-q a ) due to three infinetly long lines of charges along the x- y and z axes respectively. The charge density i.e A) charge per unit length of each wire is lamda. Find the electric gfield vector at p ( a Three charges +q