As a positively charge rod is brought nearer to the top cap of a positively charged gold leaf electroscope, the divergence of the leaves will
decrease to zero
steadily increase
decrease to zero and then increase
remain constant
increase to a maximum and then decrease
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Discussions (8)
the question is straight and direct I think. like charge will repel which will cause the divergence and convergence in unlike charges
It's easy, When a positive body is brought near a positively charged electroscope divergence increases any other charged body (negative and neutral) decrease the divergence,
When a negative charged body is brought near a negative charged electoscope divergence increases any other charge decreases divergence.
The correct answer is **E. increase to a maximum and then decrease**.
A gold leaf electroscope is a device that detects the electrical charge of a body and classifies its polarity. It consists of two gold leaves, a brass rod, and a brass diskΒΉ. When a charge is put on the disk, it spreads to the leaves, causing them to repel each other and diverge. The more the charge, the more the divergence.
When a positively charged rod is brought near the disk of a positively charged electroscope, the following happens:
- The positive charges on the disk are repelled by the rod and move to the leaves, increasing their charge and divergence.
- As the rod is brought closer, the positive charges on the disk decrease, while the negative charges from the ground are attracted to the disk, creating an opposite charge on the disk and the rod.
- When the rod is very close to the disk, the negative charges on the disk cancel out the positive charges on the leaves, causing them to collapse.
- If the rod touches the disk, the electroscope will be discharged and the leaves will remain collapsed.
Therefore, the divergence of the leaves will increase to a maximum and then decrease as the rod is brought nearer to the disk.
