1.

A spherical conductor A contains two spherical cavities. The totalcharge on the conductor itself is zero. However, there is a point charge q_b at the centre of one cavity and q_c at the centre of the other. At considerable distance r away from the centre of the spherical conductor, there is another charge q_d. Forces acting on q_b, q_c and q_d are F_1, F_2, and F_3, respectively. [Assume all charges are positive.]

Answer»

`F_1ltF_2ltF_3`
`F_1=F_2ltF_3`
`F_1=F_2gtF_3`
`F_1gtF_2gtF_3`

SOLUTION :`F_(3)-(K(a_(b)+q_(d)))/(R^(2))`


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