Resistors connected in series.
Performing measurements and calculations:
1.1. Choose 3 resistors on laboratory PCB : R_A, R_B, R_C (except R6, R9, R12).
1.2. Perform measurements of resistance of chosen components, results place into relevant cells in Table 1.1.
1.3. Connect circuit according to schematic diagram given on Fig. 1.1.
1.4. Read value of R_eq displayed on the multi meter and write down into Table 1.1.
1.5. Connect circuit according to schematic diagram given on Fig. 1.2. – use the same resistors.
1.6. Attune value of 10 Volts on the Power Supply (using right knob on the front panel); pay attention not to exceed value of current above 20 mA
1.7. Perform measurements of current and voltages. Results put into Table 1.2.
Fig. 1.1.
Table 1.1.
Set of R R_A R_B R_C R_eqMeasured R_eqCalculated
Table 1.2.
Voltages measured V_A V_B V_C ΣU Voltages calculated by Ohm’s law ΣU Power dissipated P_A P_B P_C
U_ps I U_A U_B U_C P_A
Fig. 1.2.
Resistors connected parallelly.
Performing measurements and calculations:
1.1. Choose the same 3 resistors on laboratory PCB : R_A, R_B, R_C (except R6, R9, R12).
1.2. Perform measurements of resistance of chosen components, results place into relevant cells in Table 2.1.
1.3. Connect circuit according to schematic diagram given on Fig. 2.1.
1.4. Read value of R_eq displayed on the multi meter and write down into Table 2.1.
1.5. Connect circuit according to schematic diagram given on Fig. 2.2. – use the same resistors.
1.6. Attune value of 10 Volts on the Power Supply (using right knob on the front panel); pay attention not to exceed value of current above 20 mA
1.7. Perform measurements of current and voltages. Results place into relevant cells in Table 2.2.
Fig. 2.1.
Table 2.1.
Set of R R_A R_B R_C R_eqMeasured R_eqCalculated
Table 2.2.
Voltages measured V_A V_B V_C ΣU Voltages calculated by Ohm’s law ΣU Power dissipated P_A P_B P_C
U_ps I U_A U_B U_C P_A
Fig. 2.2.