PHYSICS

JAMB 2014 - Question 33

Physics 2014 JAMB Past Questions - Question 33: When a negatively -charged rod is brought near the cap of a charged goldleaf eletroscope which has positive charges ,the leaf .

Choose the correct answers from the options given.
When a negatively -charged rod is brought near the cap of a charged goldleaf eletroscope which has positive charges ,the leaf .
A:
B:
C:
D:
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Correct Answer

A

Explanation

two unlike charges will attract each other and their charges neutralize if they are of the same strength therefore the leaf of the electroscope will collapse.When a negatively-charged rod is brought near the cap of a charged gold-leaf electroscope, which has positive charges, the leaf of the electroscope will be attracted towards the rod. This is because opposite charges attract each other. The negative charges on the rod will induce a separation of charges in the electroscope, causing the positive charges in the leaf to move towards the rod, resulting in the leaf bending towards the rod.