Non Linear Resistance.

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NON LINEAR RESISTANCE

  Name of Instructor: Mr. A. R. Ilangakoon                                

                                                                Name                :         Perera K.N.S.

                                  Index No        :                  020287        

                                Field                :                 ENTC

                                  Date of Per.        :            03/12/2003

                                  Date of Sub.:           10/12/2003    

CALCULATION

Measurement of filament lamp

RL = (V/I) × 1000 Ω

Measurement of standard resistor

Standard resistance value = 58.0 Ω

RS = (V/I) × 1000 Ω

Measurement of standard resistor-filament lamp series combination

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RL = (VL/I) × 1000 Ω

RS = 1000 × (VS - VL)/I Ω

Total Resistance = R = (RL + RS) Ω

Load line for the series circuit :        VS = VL + I × RS         ->        VL = -IRS + VS

The voltage drop across the lamp can be computed graphically by drawing the load line for the circuit and the V-I curve for the lamp in the same graph and taking the intersection point voltage.

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