- #1
leolaw
- 85
- 1
Sphere A carries a net charge and sphere B is neutral. Both are conducting spheres and they are placed near each other on an insulated table. Which statement best describes the electrostatic force between them?
a) there is no force b/w them since one is neutral
b) there is a force of attraction
c) there is a force of repulsion
d) the force is attractive if A is charged positively and repulsive if A is charged negatively.
I think answer (a) is right because according to Coulomb's law, [tex] F = k\frac{q_1q_2}{r^2}[/tex], and since that B is neutral so its net charge should be 0, which makes the entire equation equals to zero.
But then i was thinking about attraction by induction between sphere A and B. And if it does happen, then answer (b) is also correct.
Which one of my idea is right?
a) there is no force b/w them since one is neutral
b) there is a force of attraction
c) there is a force of repulsion
d) the force is attractive if A is charged positively and repulsive if A is charged negatively.
I think answer (a) is right because according to Coulomb's law, [tex] F = k\frac{q_1q_2}{r^2}[/tex], and since that B is neutral so its net charge should be 0, which makes the entire equation equals to zero.
But then i was thinking about attraction by induction between sphere A and B. And if it does happen, then answer (b) is also correct.
Which one of my idea is right?