when a conducting soap bubble is negatively charged then
a. its size starts varying arbitarily
b. it expands
c. it contracts
d. no change in its size takes place

Asked by dilipdevesh1170 | 7th Jun, 2016, 08:32: PM

Expert Answer:

The soap bubble is conducting. So, when a negative charge is applied on it, this charge will distribute itself on the surface of the bubble.
So, there is a net negative charge on the soap bubble. Now, each individual charges will repel each other and the radius of the bubble increases.
Therefore, when a conducting soap bubble is negatively charged, it expands.

Answered by Romal Bhansali | 9th Jun, 2016, 10:43: AM

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