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A. Study of phase difference between voltage and current in series RC and LR circuit B. Study of resonant frequency in parallel LC circuit
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- Words:
- 1296
- Submitted:
- Thu Nov 05 2009
- Mark submitted by Author:
... Title: A. Study of phase difference between voltage and current in series RC and LR circuit B. Study of resonant frequency in parallel LC circuit Part A: Objective: 1. To display the waveforms of voltage and currents in series RC and LR circuits by a CRO. 2. To determine the phase differences between voltage and current in the circuits. Apparatus: CRO (dual trace) 1 Low voltage power supply 1 1100-turn inductance coil 1 Resistance substation box 1 Capacitance substitution box 1 Double C-coil with clip 1 Connecting wires n Procedure and Results: A. RC circuit After connecting the RC circuit, turning on the low voltage a.c.power supply and setting it to 2V and 50Hz, the traces shown on the CRO was observed and sketched. Capacitance = 1·F, Resistance = 2.2k?: It clearly showed that there was phase difference between the voltage and the current. The current lead the voltage by about ?/4 rad -?/2 rad. Then the steps were repeated with the other resistor of different resistance (R). Capacitance =
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