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Rs L1(cm) L2(cm) 328.5 57.8 42.2 389.6 53.6 46.4 450.0 50.0 50.0 509.5 46.9 53.1 570.4 44.1 55.9

Rs L1(cm) L2(cm) 328.5 57.8 42.2 389.6 53.6 46.4 450.0 50.0 50.0 509.5 46.9 53.1 570.4 44.1 55.9

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Rs L1(cm) L2(cm) 328.5 57.8 42.2 389.6 53.6 46.4 450.0 50.0 50.0 509.5 46.9 53.1 570.4 44.1 55.9
Transcribed Image Text:Rs L1(cm) L2(cm) 328.5 57.8 42.2 389.6 53.6 46.4 450.0 50.0 50.0 509.5 46.9 53.1 570.4 44.1 55.9
Note : the color code table Color Coding Color Figure Black Brown 1 Red 2 Orange 3 Yellow 4 Green 5 blue Violet 7 Gray White 9. Gold 5% Objective for this experiment is O To measure unknown resistance using Wheatstone bridge. O To measure the time constance using Wheatstone bridge. O To measure the voltage of power supply using Wheatstone bridge. O To measure power dissipated across unknown resistance. Which method is more accurate to measure an unknown resistor ? and why? The value of standard resistor in ohm is 4 5 2 6. 1 1 1 7 7 9. 9 X10K X1K X100 4 3 2 5 3 2 6 6. 1 7 8 9 9 X10 X1 O 609 O 669 O 6609 O 66009 Order the steps for wheatstone bridge experiment : v change the value of standard resistor Rs v Record the readings of both lengths L1 and L2 when the bridge is balanced at different value of Rs. v Connect the circuit ,then Turn the power supply ON Move the pointer along the whetstone bridge wire until the galvanometer needle shows zero deflection. QUESTION 5 Use (sheet no. 14) in the attached excel file and the following equation L1 R = R, L2 to plot the relation R, L1 Data for experiment 4 new.xlsx o the slope of R, vs L2 is L1 o the slope represents o the value of Ry is • use the resistor color-coding to determine the value of Rth Compare the measured value of Ry with the calculated one using the resistor color-coding and then find the percentage difference in your result. %R = v % Use the given graph to find: 1. Slope = 2. Intercept = Then use these values to find the value of ratio (22) when Rs=90 ohm, L1 The value of ratio L2 is 40 45 40 35 30 25 20 15 10 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 L2/L1 Rs(ohm)
Transcribed Image Text:Note : the color code table Color Coding Color Figure Black Brown 1 Red 2 Orange 3 Yellow 4 Green 5 blue Violet 7 Gray White 9. Gold 5% Objective for this experiment is O To measure unknown resistance using Wheatstone bridge. O To measure the time constance using Wheatstone bridge. O To measure the voltage of power supply using Wheatstone bridge. O To measure power dissipated across unknown resistance. Which method is more accurate to measure an unknown resistor ? and why? The value of standard resistor in ohm is 4 5 2 6. 1 1 1 7 7 9. 9 X10K X1K X100 4 3 2 5 3 2 6 6. 1 7 8 9 9 X10 X1 O 609 O 669 O 6609 O 66009 Order the steps for wheatstone bridge experiment : v change the value of standard resistor Rs v Record the readings of both lengths L1 and L2 when the bridge is balanced at different value of Rs. v Connect the circuit ,then Turn the power supply ON Move the pointer along the whetstone bridge wire until the galvanometer needle shows zero deflection. QUESTION 5 Use (sheet no. 14) in the attached excel file and the following equation L1 R = R, L2 to plot the relation R, L1 Data for experiment 4 new.xlsx o the slope of R, vs L2 is L1 o the slope represents o the value of Ry is • use the resistor color-coding to determine the value of Rth Compare the measured value of Ry with the calculated one using the resistor color-coding and then find the percentage difference in your result. %R = v % Use the given graph to find: 1. Slope = 2. Intercept = Then use these values to find the value of ratio (22) when Rs=90 ohm, L1 The value of ratio L2 is 40 45 40 35 30 25 20 15 10 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 L2/L1 Rs(ohm)
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