A soap bubble of radius 3 cm is charged with 9 nc.The excess pressure inside the bubble if surface tension of soap solution is 300 N/m is

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Q. A soap bubble of radius 3 cm is charged with surface charge density

σ

such that

\frac{σ^{2}}{ϵ_{0}} = 0.4 S I

units. The excess pressure inside the bubble in SI unit (surface tension of soap solution

= 3 \times 10^{- 3}

N/m) is:

Q. The surface tension of a soap solution is

25 \times 10^{- 3}

N/m. The excess pressure inside a soap bubble of diameter

1 c m

is:

A soap bubble of radius $1.0$ cm is electrically charged so that the pressure inside the bubble is identical with the outside pressure. If the surface tension of the soap solution is $0.028$ N /m, the electric charge on the bubble will be:

Q. The excess pressure across a soap bubble of radius

r

p = \frac{4 σ}{r},

where

σ

is the surface tension of soap solution. What is the excess pressure across an air bubble of the same radius

r

formed inside a container of soap solution?

Q. The surface tension of soap solution is

0.05

N m^{- 1}

. If the diameter of the soap bubble is

4 c m

. The excess pressure inside the soap bubble over that of outside is .............. Pascal:

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