K.C.S.E Physics Q & A - MODEL 1998PP1QN15

6/7/2020

K.C.S.E Physics Q & A - MODEL 1998PP1QN15

A highly negatively charged rod is gradually brought close to the cap of a positively charged electroscope. It is observed that the leaf collapses initially and then diverges. Explain the observation.

ANSWERS

As the rod approaches the cap, negative charges/electrons on the cap are repelled towards the rod. The leaf collapses since the positive charges on it are neutralized attraction. As the rod gets even closer to the cap moved more negative charges/electrons charges are repelled to the leaf, causing it to diverge.

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FORM I - PHYSICS SYLLABUS

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Electrostatics (12 Lessons)
Cells and Simple Circuits (12 Lessons)

FORM II - PHYSICS SYLLABUS

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Turning Effect of Force (10 Lessons)
Equilibrium Centre of Gravity (12 Lessons)
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K.C.S.E Physics Q & A - MODEL 1998PP1QN15

K.C.S.E Physics Q & A - MODEL 1998PP1QN15

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