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# RC, RL회로

저작시기 2007.09 |등록일 2009.12.22 한글 (hwp) | 8페이지 | 가격 500원

## 소개글

The purpose of the first experiment is to investigate how the voltage across a capacitor varies as it charges and to find the capacitive time constant.
The second experiment displays the voltages across the inductor and resistor in an inductor-resistor circuit (LR circuit), and the current through the inductor so that the behavior of an inductor in a DC circuit can be studied.
The third experiment is to see how the current amplitude changes with respect to the driving frequency of the alternating current. Therefore, our ultimate goal is to see that the RLC oscillation is optimized at the condition of resonance.

## 목차

Ⅰ. Preface
1. Purpose of the Experiment

Ⅱ. Theory
1. Charging a Capacitor
2. The Time Constant
3. The RL Circuit

Ⅳ. Procedure
1. Experiment 1 : RC Circuit
2. Experiment 2 : RL Circuit

Ⅴ. Result and Analysis
1. Experiment 1 : RC Circuit
2. Experiment 2 : RL Circuit
3. Experiment 3 : Resonance Curve

Ⅵ. Conclusion

## 본문내용

Ⅱ. Theory
1. Charging a Capacitor
The circuit that include capacitor and resistance is RC circuit. We find
The last term on the left side represents the potential difference across the capacitor. The term isnegative because the capacitor`s top plate, which is connected to the battery`s positive terminal, is at a higher potential than the lower plate. Thus, there is a drop in potential as we move down through the capacitor. We cannot immediately solve that equation because it contains two variables, I an

From the first experiment, we could verify that the charge in the capacitor increases such that the rate of the increase of the charge with respect to the time decreases exponentially. Therefore, the charge ultimately approaches to the certain maximum charge value . We experimentally checked this fact by measuring the voltage applied to the capacitor : this is possible because the capacitance is remained constant throughout the entire experiment, thereby maintaining the relationship between the charge and the voltage directly proportional to each other. However, there was some difference between actual value of the and experimentally deduced value of , since we could not consider the resistance of the wire and the internal resistance within the capacitor.