Object of the experiment Knowing the resistance of a series connection. Setup Measuring results Resistor 47 Q : Measurement at the resistor U U ;__ R R = I --- Apparatus Evaluation 1 plug-in board DIN A4576 74 Calculate the resistances from the measured voltage and 1 set of 10 bridging plugs501 48 current values, and write them in the table. 1 STE resistor 47 9577 28 - Calculate the sum eithe individual reeiaianeee in the series 1 STE resistor 100 (2577 32 connection: 2 STE monocell holders...................................576 86 2monocells 1.5 V200 26 381 b What can you say about the total resistance of a series 1 voltmeter DC 1 ammeter DC 2 pairs of cables Carrying out the experiment Set up the circuit as shown in the gure with the resistor 4? 9. Measure the voltage at the resistor and the current, and take these values down. Repeat the experiment with the resistor 100 9. Insert the two resistors in the circuit so that the current ows through them one alter the other, i.e., connect them in se ries. Measure the current, and take it down. Measure the voltage at the two resistors together and at each individual resistor and write them in the table. connection of resistors? Calculate the sum of the individual voltages at the series- connected resistors: What is the relation between the total voltage and the indi- vidual voltages in a series connection? Calculate the current lcalc owing through the resistors and write it in the table. It is true that: = R1 R2 What can you say about the current owing through series- connected resistors? Object of the experiment Knowing the resistance of a parallel connection. Setup Measuring example - Resistor 47 Q : Evaluation ~ Calculate the resistances from the measured values for the currents and voltages, and write them in the tables. - Calculate the reciprocals of the resistances, and write them in the tables. Calculate the sum of the reciprocals of the in- dividual resistances: Apparatus - What can you say about the total resistance in a parallel _ connection of resistors? 1plug-In board DIN A4 576 74 1 set of 10 bridging plugs50148 1 STE resistor 47 $1577 28 1 STE resistor 100 9577 32 2 STE monocell holders...................................576 86 2monocells1.5 V200 26 381 M Calculate the SLHTI Of the individual currents that flow 1 voltmeter DC through the resistances: 1 ammeter DC h + l2 = 2 pairs of cables - What can you say about the total current in terms of the Carrying out the exPer'ment individual currents in a parallel connection? - Set up the circuit as shown in the gure with the resistor 47 Q. - Measure the voltage at the batteries (voltage source) and the current, and write these values in the table. _ Repeat the experiment with the resistor 100 Q. ~ What can you say about the voltage at the resistors in a all | t'o ? - Insert the two resistors side by side in the circuit so that the par e connec I n current flows parallel through both of them. Repeat the ex- periment