Q2. A resistor is connected in series with a capacitor to form the RC circuit shown...
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Q2. A resistor is connected in series with a capacitor to form the RC circuit shown below. R switch C The resistor has a resistance of 50 kn. The current is measured for the time t after the switch is closed at t = 0 and the best-fit curve is represented by the equation /(t) = 5.20e-t/10, where I is in milliamperes and is in seconds. a) Determine the value of the charging voltage V, predicted by the equation. b) Determine the value of the capacitance C predicted by the equation. c) The charging voltage is measured in the laboratory and found to be greater than predicted in part (a). i. Give one possible explanation for this finding. ii. Explain the implications that your answer to part (i) has for the predicted value of the capacitance. d) You were asked to decrease the charging time of the circuit. You may add resistor or capacitors to the original components and reconnect the RC circuit. In parts d(i) and d(ii) below, show how to reconnect the circuit to decrease the charging time. i. ii. Indicate how a resistor may be added to decrease the charging time. Add the necessary resistor and connections to the following diagram. + Instead of using a resistor, use a capacitor. Indicate how a capacitor may be added to decrease the charging time. Add the necessary capacitor and connections to the following diagram. S. + + Q2. A resistor is connected in series with a capacitor to form the RC circuit shown below. R switch C The resistor has a resistance of 50 kn. The current is measured for the time t after the switch is closed at t = 0 and the best-fit curve is represented by the equation /(t) = 5.20e-t/10, where I is in milliamperes and is in seconds. a) Determine the value of the charging voltage V, predicted by the equation. b) Determine the value of the capacitance C predicted by the equation. c) The charging voltage is measured in the laboratory and found to be greater than predicted in part (a). i. Give one possible explanation for this finding. ii. Explain the implications that your answer to part (i) has for the predicted value of the capacitance. d) You were asked to decrease the charging time of the circuit. You may add resistor or capacitors to the original components and reconnect the RC circuit. In parts d(i) and d(ii) below, show how to reconnect the circuit to decrease the charging time. i. ii. Indicate how a resistor may be added to decrease the charging time. Add the necessary resistor and connections to the following diagram. + Instead of using a resistor, use a capacitor. Indicate how a capacitor may be added to decrease the charging time. Add the necessary capacitor and connections to the following diagram. S. + +
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