A soap bubble (surface tension T) is charged to a uniform charged density `sigma`. At equilibrium the radius of the bubble is given by `(Nepsilon_(0)T)/(sigma^(2))`. The value of N is [Assume that atmosphere is not present]

A soap bubble (surface tension T) is charged to a uniform charged dens

1.	A soap bubble (surface tension T) is charged to a uniform charged density `sigma`. At equilibrium the radius of the bubble is given by `(Nepsilon_(0)T)/(sigma^(2))`. The value of N is [Assume that atmosphere is not present]
Answer» Correct Answer - 8 At equilibrium just before bursting the force due to surface tension is balanced by electrostatic repulstion so `(4T)/(r)xx"area"=(sigma^(2))/(2epsilon_(0))xx"area"impliesr=(8epsilon_(0)T)/(sigma^(2))`

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A soap bubble (surface tension T) is charged to a uniform charged density `sigma`. At equilibrium the radius of the bubble is given by `(Nepsilon_(0)T)/(sigma^(2))`. The value of N is [Assume that atmosphere is not present]

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