Physics II Lab w answers_Part_28

Physics II Lab w answers_Part_28 - Wiley &...

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67 8. What would be the effect on the experiment if resistances of the order of 100 or 1 k were used? 9. By what percentage (with respect to the maximum charge on the capacitor C ) , does the capacitor charge / discharge in a time interval t = , t = 2 ( = time constant )? 10. Estimate the width of the current pulse that passes through the ballistic galvanometer when the capacitor is discharged through it .You may need to have an idea of the intrinsic resistance of the galvanometer. References: 1. “ Physics”, M.Alonso and E.J.Finn, Addison-Wiley, 1992 2. “ Fundamentals of Physics”, D.Halliday, R.Resnick and J.Walker,6 th edition, John-
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Unformatted text preview: Wiley & sons, New York 2001. 68 Experiment 10 Charging and Discharging of a Capacitor Observations and results Part A: Measurement of time constant for discharging of a capacitor R 2 = ________________________ C = ________________________ PART A : Measurement of time constant for discharging of capacitor Table 1 Rest position of spot on the scale = ______________________ First throw position X (cm) ln X S.No Discharging time t (sec) Red Green 1 0 2 10 3 20 4 30 5 40 6 50 7 60 Calculations: Plot the graph of ln X vs. t and draw a best fit straight line .Obtain the time constant from slope ( = - 1 / R 2 C ) of the line . Slope =...
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Physics II Lab w answers_Part_28 - Wiley &...

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