K.C.S.E Physics Q & A - MODEL 1995PP2QN07
The sketch in the fig 5 shows the results of an experiment where a transistor was used as a voltage amplifier
(c)​Explain how the voltage amplification factor, beta, may be obtained from the sketch graph
(d) (i) Draw a circuit diagram of p – n – p transistor operating in the common emitter ( C-E) mode indicate on the diagram the directions of the collector current Ic the base current IB the emitter current IE (ii) Write the equation relating IC IB IE (e) Identify the type of biasing in each of the junctions of a transistor in operation
answers
​(c) At the middle of the reaction of a curve a tangent is drawn change on output (∆V0) is determined and a corresponding change input (∆V1) also attained change amplification.
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K.C.S.E Physics Q & A - MODEL 1995PP2QN07
Distinguish between p- n- p and n – p – n transistors
answers
K.C.S.E Physics Q & A - MODEL 1995PP2QN07
Describe how a p- type semi conductor is formed
ANSWERS
K.C.S.E Physics Q & A - MODEL 1995PP2QN06
The sketch graph in fig 4 shows the results of an experiment to study diffraction patterns using a double slit.
(i) Sketch an experimental set up that can be used to obtain such a pattern
(ii) Name an instrument for measuring the intensity (iii) Explain how the peaks labeled A and B, and troughs labeled C are formed
K.N.E.C ANSWER
K.C.S.E Physics Q & A - MODEL 1995PP2QN06
State the condition for a minim to occur in an interference pattern
K.N.E.C MARKING SCHEME
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M.A NyamotiMy passion is to see students pass using right methods and locally available resources. My emphasis is STEM courses |
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