A spherical balloon is initially uncharged. If you spread positive charge uniformly over the balloon's surface...

A spherical balloon is initially uncharged. If you spread positive charge uniformly over the balloon's surface would it expand or contract? What would happen if you spread negative charge instead?

According to my TA the correct answer is when it's positive charge it expands and when it's negative charge it contracts.

What is the reasoning behind this? Please explain.

Expert Solution

Whether you spread positive or negative charge over the surface of the balloon, the balloon would expand because like charges repel.

When you spread positive charge over the balloon's surface it will expands because all of its partice becomes positively charged and they would repel each other and hence the balloon expands.

Similarly When you spread negative charge over the balloon's surface it will expands because all of its partice becomes negatively charged and they would repel each other and hence the balloon expands.

genius_generous answered 2 years ago

A charge of -7.00 nC is spread uniformly over the surface of one face of a...

A charge of -7.00 nC is spread uniformly over the surface of one face of a nonconducting disk of radius 1.30 cm . a) Find the magnitude of the electric field this disk produces at a point P on the axis of the disk a distance of 3.00 cm from its center. b) Suppose that the charge were all pushed away from the center and distributed uniformly on the outer rim of the disk. Find the magnitude of the electric...

A charge of -5.50nC is spread uniformly over the surface of one face of a nonconducting...

A charge of -5.50nC is spread uniformly over the surface of one face of a nonconducting disk of radius 1.00cm Part A Find the magnitude of the electric field this disk produces at a point P on the axis of the disk a distance of 3.00cm from its center. Part B Suppose that the charge were all pushed away from the center and distributed uniformly on the outer rim of the disk. Find the magnitude of the electric field at...

Two spherical shells have a common center. A -2.5 10-6 C charge is spread uniformly over the...

Two spherical shells have a common center. A -2.5 10-6 C charge is spread uniformly over the inner shell, which has a radius of 0.050 m. A +5.7 10-6 C charge is spread uniformly over the outer shell, which has a radius of 0.15 m. Find the magnitude and direction of the electric field at the following distances (measured from the common center). (a) 0.20 m magnitude ---Select--- N/C C/N N C direction ---Select--- radially inward no direction radially outward (b) 0.10...

A spherical charge distribution of radius R has a charge Q distributed uniformly over its volume....

A spherical charge distribution of radius R has a charge Q distributed uniformly over its volume. Find the magnitude of the electric field E(r) and the electric potential V (r) for all r.

Normal forces are applied uniformly over the surface of a spherical volume of water whose radius...

Normal forces are applied uniformly over the surface of a spherical volume of water whose radius is 20.0 cm. If the pressure on the surface is increased by 200 MPa, by how much does the radius of the sphere decrease?

) A charge is spread out uniformly over a small non-conducting sphere. The small sphere shares...

) A charge is spread out uniformly over a small non-conducting sphere. The small sphere shares a center with a larger spherical shell with an inner radius of 6 ?? and an outer radius of 12 ??. a) Using Gauss’ Law, what is the magnitude of the charge on the nonconducting sphere if the field from the sphere is measured to be 8200 ?/? when 0.5 ?? from the center? b) What is the surface charge density on the inside...

A charge density σ(θ) = 4σ cos (θ) is glued over the surface of a spherical...

A charge density σ(θ) = 4σ cos (θ) is glued over the surface of a spherical shell of radius R. Find the resulting potential inside and outside the sphere.

A thin spherical shell of radius R and total charge Q distributed uniformly over its surfacce....

A thin spherical shell of radius R and total charge Q distributed uniformly over its surfacce. 1. Plot resistitivity as a function of temperature for some resonable range of temeratures. 2. Design a resistor made of copper that has a resistance of 50 Ohms at room remperature.

Charge q = + 15 nC is uniformly distributed on a spherical shell that has a...

Charge q = + 15 nC is uniformly distributed on a spherical shell that has a radius of 120 mm. 1. What is the magnitude of the electric field just outside the shell? (Express your answer with the appropriate units.) 2. What is the magnitude of the electric field just inside the shell? (Express your answer with the appropriate units.) 3. What is the direction of the electric field just outside and just inside the shell? a. radially inward just...

a. Describe what happens to an uncharged conductor when a positive charge is brought near. Explain...

a. Describe what happens to an uncharged conductor when a positive charge is brought near. Explain any forces that are exerted on the conductor. A sketch or drawing may be helpful. b. Describe what happens to an uncharged insulator when a positive charge is brought near. Explain any (net) forces that are exerted on the insulator. A sketch or drawing may be helpful.

Question