Why is the sphere on the left becomes negatively charged when A positively charged glass rod is brought near to it?
(b) A positively charged glass rod is brought near the sphere on the left, attracting negative charge and leaving the other sphere positively charged. In this case, electrons are attracted to the sphere through a wire called the ground wire, because it supplies a conducting path to the ground.
How is charge distributed on A metal sphere?
In particular, if a metal sphere is charged, since charge can flow freely through a metal, the self-repulsion of charges will result in all the charge residing on the surface of the sphere, which then behaves as a hollow spherical charge distribution with zero electric field within.
How do excess charges arrange themselves in the sphere?
The excess negative charge on sphere A remains crowded towards the left side of the sphere, positioning itself close to the balloon. Once the balloon is removed, electrons redistribute themselves about sphere A until the excess negative charge is evenly distributed across the surface.
When A charge is placed on A metal spherical object the charge resides?
If some charge is given to a solid metallic sphere, the field inside remains zero and by Gauss’s law all the charge resides on the surface.
When positively charged sphere is brought?
When a positively charged sphere is brought near a metallic sphere, it is observed that a force of attraction exists between the two. It means that. nothing can be said about the charge of the metallic sphere.
What happens to the neutral metal spheres when a negatively charged sphere is brought near them without touching?
The presence of a charged object near a neutral conductor will force (or induce) electrons within the conductor to move. A negatively charged balloon is brought near to (without touching) the left sphere. The presence of the negatively charged balloon forces electron movement from the left sphere to the right sphere.
Where is the charge on a sphere?
Electric Field: Sphere of Uniform Charge The electric flux is then just the electric field times the area of the spherical surface. The electric field outside the sphere (r > R)is seen to be identical to that of a point charge Q at the center of the sphere.
What is the charge on the sphere?
zero
Gauss’ law tells us that the electric field inside the sphere is zero, and the electric field outside the sphere is the same as the field from a point charge with a net charge of Q. This result is true for a solid or hollow sphere. So we can say: The electric field is zero inside a conducting sphere.
How can we charge a metal sphere negatively without touching it?
A metal sphere can be charged negatively without touching it by the process of induction.
How is charge distributed on a hollow sphere?
The conducting hollow sphere is positively charged with +q coulomb charges. If the sphere has equal density all over its surface , then +q charge will be equally distributed all over the surface. As the charges are positive , the sphere will repulse any positive point charge near it .
When an uncharged metal sphere is brought closer to a positively?
A charged metallic sphere when brought nearer to an uncharged metallic sphere, it may exert an attractive force, but once they touch each other, they exert repulsive force.