You have three identical conducting spheres on insulating stands. One sphere is

Question

You have three identical conducting spheres on insulating stands. One sphere is positively charged and the other two are neutral. You need to use the positively charged sphere to charge the two neutral spheres as described below. The spheres may be grounded by touching them, if necessary. Describe one way of charging, the two neutral spheres that will result in them having the same amount of positive charge. Describe one way of charging, the two neutral spheres that will result in them having the same amount of negative charge. Describe one way of charging, the two neutral spheres that will result in one of them having positive charge and the other one having the same amount of negative charge.

Explanation / Answer

(a)

If you touch the three sphere, the charge will distribute equally to all the spheres.

So you will get same amount of positive charge on three spheres.

(b)

This is possible by induction and grounding.

Place the two neutral charges near to the positive charge and two neutral charges are grounded.

This arrangement attracts the negative ions towards positive charge as well as attracts electrons from the ground.

In this way neutral charges gets negative charges.

(c)This is possible by induction

Place two neutral spheres are in contact position.

Now take the charged object nearer to the two spheres that are in contact.

This causes to attracts the negative charges to sphere that near to the positive charge and reple the

positive charges to other sphere. Now sperate the three sphere. Then you will get one positive and one negative charged objects.

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