Suppose you brought a charged object near to the ball of the electroscope used i

Question

Suppose you brought a charged object near to the ball of the electroscope used in lab and touched the ball with the object. When you pull the object away the leaves stay spread apart. Next, you bring a different object close to the ball of the electroscope and, without touching the ball, the leaves fall. what can you infer about the charges of the two objects? The first object was positively charged and the second object was neutral. when you brought the second object near the ball of the electroscope the excess electrons jumped from the ball to the object. O Neither object was charged. The electroscope could not get extra electrons because it was surrounded by an insulator O It's impossible to know anything about the charges of the objects. O Both objects were charged the same. The frst positive charge induced a negative charge by the leaves, and the second object took away the electrons to make·neutral O The two objects were opposite charges. The first object gave the object an overall charge, and the second object induced a charge near the ball to make the leaves neutral.

Explanation / Answer

The effect of first object is the leaves are spread apart. This means the object was charged.

Now the electroscope is charged with the same charge as that of the conductor.

On bringing the 2nd object, the leaves fall. This means object 2 has opposite charge, Beacuse only then it will attract the charge and reduce the net charge on the leaves, making them fall.

So the most apt option is:

The last option.

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