A small elecrtrically charged sphere is suspended vertically from a thread. An oppositely charged rod is brought close to the sphere such that the sphere is the sphere is in equlibrium displaced from the vertical by an angle of `30^(@).` When one of the following best represents the free body diagram for the sphere?

if a negatively charged rod is brought nearer to a neutral conducting sphere, then ......

A small sphere of mass m and having charge q is suspended by a light thread.

A metal sphere is suspended from a nylon thread. Initially, the metal sphere is uncharged. When a positively charged glass rod is brought close to the metal sphere, the sphere is drawn towards the rod. But if the sphere touches the rod, it suddenly flies away from the rod. Explain, why the sphere is first attracted then repelled?

A metal sphere is suspended from a nylon thread. Initially, the metal sphere is uncharged. When a positively charged glass rod is brought close to the metal sphere, the sphere is drawn towards the rod. But if the sphere touches the rod, it suddenly flies away from the rod. Explain, why the sphere is first attracted then repelled?

Two sphere A and B are placed between two vertical walls as shown in figure. Draw the free body diagrams of both the spheres

When apositively charged sphere is brought near a metallic sphere, it is observed that a force of attraction exists between the two. If means:

A small sphere of mass m suspended by a thread is first taken a side so that the thread forms the right angle with the vertical and then released, then

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