Answer to Question 2

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(a) Time constant t = RC

Therefore C = t/R = 22 s 10000 W = 2.2 10-3 F = 2200 mF

 

 

(b)  These values would not be suitable, because there would only be two values before the time constant.  This would not give a graph that's easy to draw well.  If we reduced the sampling time to 5 s, we would find ourselves being rushed.  This would increase the possibility of mistakes in the reading.