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Q1 (i) The switch S in the circuit shown in Figure 1.1 is in position A. Calculate the charge on the capacitor C and the energy stored. A В VB R VB = 60 V, C = 50 µF, R = 10 kN Figure 1.1 (ii) At time t = 0, S is moved to position B so the capacitor C is discharged through the resistor R. You may assume that in position B the current is given by I(t)= I,elt where the symbols have their usual meaning. Calculate: (a) the current through R at t = 0s. (b) the time constant. (c) the current through R whent = 0.75 s.

Q1 (i) The switch S in the circuit shown in Figure 1.1 is in position A. Calculate the charge on the capacitor C and the energy stored. A В VB R VB = 60 V, C = 50 µF, R = 10 kN Figure 1.1 (ii) At time t = 0, S is moved to position B so the capacitor C is discharged through the resistor R. You may assume that in position B the current is given by I(t)= I,elt where the symbols have their usual meaning. Calculate: (a) the current through R at t = 0s. (b) the time constant. (c) the current through R whent = 0.75 s.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Q1 (i) The switch S in the circuit shown in Figure 1.1 is in position A. Calculate the charge on the capacitor C and the energy stored. A В VB Vв %3D 60 V, С 3 50 µF, R = 10 kN Figure 1.1 (ii) At time t = 0, S is moved to position B so the capacitor C is discharged through the resistor R. You may assume that in position B the current is given by I(t)=I,e¯tlr where the symbols have their usual meaning. Calculate: (a) the current through R at t = 0s. (b) the time constant. (c) the current through R when t = 0.75 s. (d) the time at which the voltage across C is 30V. (e) the time at which half of the initial energy stored on C is dissipated in R.
Transcribed Image Text:Q1 (i) The switch S in the circuit shown in Figure 1.1 is in position A. Calculate the charge on the capacitor C and the energy stored. A В VB Vв %3D 60 V, С 3 50 µF, R = 10 kN Figure 1.1 (ii) At time t = 0, S is moved to position B so the capacitor C is discharged through the resistor R. You may assume that in position B the current is given by I(t)=I,e¯tlr where the symbols have their usual meaning. Calculate: (a) the current through R at t = 0s. (b) the time constant. (c) the current through R when t = 0.75 s. (d) the time at which the voltage across C is 30V. (e) the time at which half of the initial energy stored on C is dissipated in R.
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