Question

What happens to the vanes when a positively charged object is brought near the disk?

1) The vanes move away from the disk
2) The vanes move towards the disk
3) The vanes do not move
4) The vanes rotate around the disk

Answer 1

The vanes move away from the disk when a positively charged object is brought near it.

Step-by-step explanation:

When a positively charged object is brought near the disk of a Van de Graaff generator, the vanes move away from the disk.

This happens because the positively charged object induces a negative charge on the disk, causing the vanes to experience a repulsive force and move away from the disk.

This phenomenon is a result of the interaction between the positive and negative charges, which creates an electric field that affects the motion of the vanes.