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A soap bubble is given a negative charge then it's radius?
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A soap bubble is given a negative charge then it's radius?
Effect of Negative Charge on Soap Bubble Radius
A soap bubble is a thin layer of soap film filled with air. When the soap bubble is charged, it experiences an electric force due to the interaction between the charges on the bubble surface and the electric field. This electric force can affect the radius of the bubble. The effect of negative charge on soap bubble radius can be explained as follows:
Coulomb's Law
Coulomb's law states that the force between two charges is proportional to the product of the charges and inversely proportional to the square of the distance between them. Mathematically,
F = k * q1 * q2 / r2
where F is the force, q1 and q2 are the charges, r is the distance between them, and k is the Coulomb's constant.
Effect of Negative Charge on Bubble Surface
When a soap bubble is negatively charged, the charges on the bubble surface repel each other due to Coulomb's law. This repulsion force causes the charges to spread out evenly on the surface of the bubble, resulting in a decrease in the surface tension of the bubble. As a result, the radius of the bubble increases.
Electrostatic Pressure
The electrostatic pressure on the bubble surface due to the negative charge also contributes to the increase in the bubble radius. The electrostatic pressure is proportional to the square of the charge density and inversely proportional to the radius of the bubble. Thus, an increase in the charge density or a decrease in the bubble radius results in an increase in the electrostatic pressure. This pressure pushes the bubble outward, causing an increase in the bubble radius.
Conclusion
Thus, the negative charge on a soap bubble causes a decrease in the surface tension of the bubble and an increase in the electrostatic pressure on the bubble surface, resulting in an increase in the bubble radius.
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A soap bubble is given a negative charge then it's radius?
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A soap bubble is given a negative charge then it's radius? for NEET 2026 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A soap bubble is given a negative charge then it's radius? covers all topics & solutions for NEET 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A soap bubble is given a negative charge then it's radius?.
A soap bubble is given a negative charge then it's radius? for NEET 2026 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A soap bubble is given a negative charge then it's radius? covers all topics & solutions for NEET 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A soap bubble is given a negative charge then it's radius?.
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