K.C.S.E Physics Q & A - MODEL 1997PP1QN32
Using the components symbols shown in figure 14, sketch a series circuit diagram for a forward biased diode
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K.C.S.E Physics Q & A - MODEL 1996PP1QN33
α- particles are more ionizing than beta- particles. Give one reason for this
In the figure 7 the circuit diagram contains bulbs B, a transistor T and a resistor R. A diode D is connected between points Y and X as shown. In the set up bulb B is not lit. When the connections YP and XQ are made, B lights. Answer questions 34, 35 and 36 with reference to the figure.
Name the type of transistor used in the circuit Explain the observation when the connections are made
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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
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
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