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PART1DC Circuit

Experiment 2 : Series Connection Circuit and Parallel Connection Circuit of Resistance

Theory

As in Fig. 1-7(a), when more than 2 resistances are connected in series and the combined resistance is RS, it can be formularized as formula 1-3 below.

R_S=R_1+R_2+ ... +R_n

As in Fig. 1-7(b), when more than 2 resistances are connected in parallel and the combined resistance is RP, it can be formularized as formula 1-4 below.

1/R_p =1/R_1 +1/R_2 + ... +1/R_n or R_p=1/(1/R_1 +1/R_2 +...+1/R_n )

As seen in the formulae above, if the resistance is connected in series, the combined resistance increases, and if connected in parallel, the combined resistance decreases.

Experiment Process

tab1

Experiment 1-2.1 Series Connection of Resistance (In Circuit-2 of M-01, compose the circuit as Fig. 1-8(a), (b), (c).)

1.Connection(Circuit-2 of M-01)
1.Circuit Connection

Connect between 2b terminal and 2c terminal, and between 2c terminal and 2d terminal of Circuit-2 with yellow lines.

2.Resistance Meter Connection

Connect between 2a terminal of Circuit-2 and High terminal of Mutlimeter on the front의 panel with red line, and between 2b terminal and Low terminal with black line.

2.Wiring Diagram
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RT2 Measurement

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RT3 Measurement

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3.Measurement
  1. 1Choose dmm at the left menu of Touch LCD panel and click ohm at Digital Multi Meter window, and then the measured value will appear. Record this in experiment 2-1 of table 1-2. (RT1 Measurement)
  2. 2Remove the connecting line between 2b terminal and 2c terminal of Circuit-2, and record the measured data appeared on Digital Multi Meter window in experiment 2-1 of table 1-2. (RT2 Measurement)
  3. 3Remove the connecting line between 2c terminal and 2d terminal of Circuit-2, and record the measured data appeared on Digital Multi Meter window in experiment 2-1 of table 1-2. (RT3 Measurement)
4.Calculation

1. Calculate total resistance of 2a-2d’s both ends from Measurement 3) and 4) and record it in Fig. 1-8 of table 1-2. (RT2, RT3 Calculation)

tab2

Experiment 1-2.2 Series Connection of Resistance (In Circuit-2 of M-01, compose the circuit as Fig. 1-9(a), (b), (c).)

1Connection(Circuit-2 of M-01)
1.Circuit Connection

Connect between 2e terminal and 2h terminal of Circuit-2 with yellow line.

2.Resistance Meter Connection

Connect between 2l terminal of Circuit-2 High terminal of Multimeter on the front panel with red line, and between 2k and Low terminal with black line.

2.Wiring Diagram
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RT2 Measurement

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RT3 Measurement

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3.Measurement
  1. 1Choose dmm at the left menu of Touch LCD panel and click ohm at Digital Multi Meter window, and then the measured value will appear. Record this in Fig. 1-9 of table 1-2. (RT1 Measurement)
  2. 2Connect between 2f terminal and 2i terminal of Circuit-2 with yellow line, and record the measured data appeared on Digital Multi Meter window in Fig. 1-9 of table 1-2. (RT2 Measurement)
  3. 3Connect between 2g terminal and 2j terminal of Circuit-2 with red line, and record the measured data appeared on Digital Multi Meter window in Fig. 1-9 of table 1-2. (RT3 Measurement)
4.Calculation

1. Calculate total resistance of 2l-2k’s both ends from Measurement 3) and 4) and record it in experiment 2-1 of table 1-2. (RT2, RT3 Calculation)

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Experiment Result Report

result
Series Connection Circuit and Parallel Connection Circuit of Resistance
1. Experiment Result Table

Table 1-2

result_table
CircuitResistance Meter
RT1RT2RT3
Fig. 1-8(Series)Measured Value
Calculated Value
Fig. 1-9(Parallel)Measured Value
Calculated Value
2. Review and Explanation
1) Using the formula to calculate combined resistance, calculate the resistance value for series connection and parallel connection and compare it with the measured value.
2) Describe the formula to calculate combined resistance for series connection and parallel connection.
3. Discuss the experiment result.