# Physics II Lab w answers_Part_30 - By measuring the voltage...

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71 By measuring the voltage V across resistor R, current I in the circuit can be determined. Measure V 1 , V 2 , and V to determine L and r using equations (2) to (6). Procedure: 1. Connect the R-L circuit to the oscillator using the given resistor and inductor coil (Fig. 1). 2. Set the oscillator frequency to 2 KHz and set the voltage amplitude in the oscillator such that the voltage drop across the inductor does not exceed certain Volts (… .). 3. Measure the voltage drops V 1 , V 2 and V for different values of R (Table 1). 4. Repeat the experiment by inserting an iron rod into the inductor coil. From eq (2) to eq (6) calculate the inductance L and resistance r of the coil for air core and iron core and plot them as a function of current in the circuit. Table1 Sl No. R(ohms) V(volts) V 1 (volts) V 2 (volts) Table2 Sl No R(ohms) I(amps) L(mH) R(ohm)

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72 Experiment 12 Resonance in LCR circuits Apparatus: Oscillator (1 to 150 kHz), variable capacitor, resistance, resistance box, AC mill voltmeter. Purpose of the experiment:
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Physics II Lab w answers_Part_30 - By measuring the voltage...

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