Question

Discussion Question 1:  Suppose that you are hiding inside a large, hollow metal sphere that is resting above the ground on an insulating layer. There is a large charge Q placed on the sphere. (a) If your body is neutral, will you be harmed if you touch the inside surface of the sphere? (b) Your clothes produce a lot of static electricity and you have a small charge –q. Will you be harmed if you touch the inside surface of the sphere?

Discussion Question 2:  A spherical surface surrounds a point charge Q, located at its center. Discuss what happens to the total flux through this surface in the following situations:

1. The charge Q is tripled;
2. The volume of the sphere is tripled;
3. The charge Q is moved away from the center of the sphere;
4. The charge Q is moved outside the sphere.

Discussion Question 3: Take a look at the diagram of the electric field lines and equipotential lines s for two equal but opposite charges – Chapter 7, Figure 7.31, page 321.

1. Explain why equipotential lines and surfaces must be perpendicular to electric field lines.
2. Do you think different equipotential lines can cross? Discuss why, or why not.
3. Would the diagram in Figure 7.31 change if the negative charge q1 became 3 times larger than the positive charge q2?

Figure 7.31 shows the electric field and equipotential lines for two equal and opposite charges. Given the electric field This OpenStax book is available for free at http:l/cnx.org/content/col12074/1.3 Chapter 7 1 Electric Potential 321 lines, the equipotential lines can be drawn simply by making them perpendicular to the electric field lines. Conversely, given the equipotential lines, as in Figure 7.32 (a), the electric field lines can be drawn by making them perpendicular to the equipotentials, as in Figure 7.32(b). Figure 7.31 The electric field lines and equipotential lines for two equal but opposite charges. The equipotential lines can be drawn by making them potential is greatest (most positive) near the positive charge and least (most negative) near the negative charge. For a three-dimensional version, explore the first media link.

You will also need to post a response to at least two of your classmates' posts.
Also, make sure that your response(s) are substantial and consist of at least 25 words.

Answer 1

Discussion Q, 1: - If body is neutral we will be not be harmed because there is no flow of change from insides to outside Of cloths produce a lot of static charge and if we touch the sphere charge will be flow from inside to outside and in this case we harmed Discussion Q, 2: - electric flux straightphi E^bar ds^bar = q/ elementof_0 of q_in is tripled flux will be tripled If volume of sphere is tripled phi will be remain same If change straightphi move away from the center of sphere straightphi remain same if charge straightphi outside of sphere q_in = 0 straightphi = 0 Discussion Q.3 electric line of force flow from higher to lower potential so equipotential surface perpendicular to electric filed. two equipotential surface never intersect each other because at intersecting point there are two direction of electric field.