K.C.S.E Physics Q & A - MODEL 2019PP2QN02
State the reason why an increase in leaf divergence is the only sure way of determining whether an object is negatively charged using a negatively charged electroscope.
answer
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K.C.S.E Physics Q & A - MODEL 2018PP2QN10
The sharp point of a pin is brought near the cap of a negatively charged electroscope .State and explain the observation made on the leaf of the electroscope
answer
K.C.S.E Physics Q & A - MODEL 2017PP2QN11
Explain what is observed when an uncharged sphere is brought close to a positively charged electroscope.
answer
K.C.S.E Physics Q & A - MODEL 2015PP2QN02
​It is observed that when a charged body is brought near the cap of a positively charged electroscope, the divergence of the leaf increases. State the type of charge on the body.
answer
K.C.S.E Physics Q & A - MODEL 2014PP2QN10
State two uses of a charged gold leaf electroscope.
answer
K.C.S.E Physics Q & A - MODEL 2014PP2QN06
It is observed that when the cap of an uncharged electroscope is irradiated with light of high frequency, the leaf of the electroscope rises. Explain this observation.
answer
​ (a) Electrons absorb enough energy and are ejected leaving the electroscope positively charged the leaf is repelled by the stem.
K.C.S.E Physics Q & A - MODEL 2012PP2QN08
​Light from a lamp falls on the cap of a negatively charged electroscope. It is observed that the divergence of the leaf decreases. Explain the observation.
ANSWER
K.C.S.E Physics Q & A - MODEL 2010PP2QN04
​A positively charged sphere is suspended by an insulating thread. A negatively charged conductor is suspended near it. The conductor is first attracted, after touching the sphere it is repelled. Explain this observation.
answer
K.C.S.E Physics Q & A - MODEL 2009PP2QN03
​A conductor is slowly bought near the cap of a positively charged electroscope. The leaf first collapses and then diverges. State the charge on the conductor.
answer
K.C.S.E Physics Q & A - MODEL 2008PP2QN02
A leaf electroscope A is charged and placed on the bench. Another uncharged leaf electroscope B is placed on the same bench and moved close to A until the caps touch. State and explain what is observed on the leaves of A and B.
answer
K.C.S.E Physics Q & A - MODEL 2005PP1QN38
​Fig 18 shows two spherical materials one an insulation conductor, the other a conductor, Negative charge are introduced at point A in each case.
​One the same figure indicate the final position of the charges. Explain your answer.
ANSWERS
K.C.S.E Physics Q & A - MODEL 2004PP1QN08
​Figure 6 (a) shows three spherical balls of the same size placed on insulating stands. Balls A and B are conductors while ball C is non conductor. Ball A was initially charged as shown. The quantity of charge is represented by the number of dashes.
​Ball A is made to touch B momentarily and then C. Show on Figure 6(b), the final distribution of charge on the balls.
answer
K.C.S.E Physics Q & A - MODEL 1999PP1QN09
Figure 7 shows a sharp pin fixed on a cap of leaf electroscope. The electroscope is highly charged and then left for sometime.
Explain why the leaf collapses
ANSWER
You are provided with a charged electroscope, an insulator and a conductor. Describe how you would use these apparatus to distinguish in the insulator from the conductor (2 mks)
KNEC ANSWERS
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