1. EXPERIMENT 1

2. PART A
Beginning at 0 V, increase the voltage across R3 in 1-Volt steps until 6 V. Measure and record the resulting current in Table 1.1 for each increment of voltage.

3. PART A
Measure the actual value of each resistor and record in Table 1.1
Nominal Resistance
R=6.8kΩ
Measured Resistance
R =
Voltage Source
(Vs)
(V) 1 2 3 4 5 6
Current
(Measured values)
(mA)
(Theoretical values)
0.11
0.32
0.43
0.65
0.75
0.86
Nominal Resistance, R=1kΩ
Measured Resistance, R =
Nominal Resistance, R=1.5kΩ
Measured Resistance, R =

5. Plot the graphs of I verses V for results in Table 1. 1
Plot the graphs of I verses V for results in Table 1.1. (Assign I to the vertical axis and V to the horizontal axis).

6. Slope (G)
R (1/G)
Measured Values
Theoretical Values
  mS
  6.8 k

7. PART B Remove the voltmeter and ammeter connections
Adjust the supply voltage (Vs) to 15V. (Note the value must be kept constant throughout the test by connecting voltmeter across the voltage supply in the circuit to observe the voltage.)
Switch off the supply. Connect the ammeter in position A.
Switch on the supply. Read the current through resistor R1.
Current through R1
Connect the voltmeter across R1 and measure the voltage drop across it.
Voltage across R1
Repeat 3 until 5 for the ammeter positions B, C, and D and the voltmeter positions across resistors R2 and R3.
Record the voltage for close and open loop. Fill up the measured values in Table 1.3

8. Supply voltage
(volt) V1
(volts) V2 V3
Σ Voltage
 1.6129
2.4194 
 10.968
15 
Supply current
(mA) I1 I2 I3
I Total
 1.613
 1.613 
1.613 mA 
Total resistance
(Ohms) R1 R2 R3
Σ R
R1+R2+R3
 1000 
1500 
6800 
9300  

9. PART C A B C D
Adjust the supply voltage 15V. (Note the value of the supply voltage and keep it constant throughout the test.)
Switch off the supply. Connect the ammeter in position A, the total current, ITotal.
Switch on the supply. Measure voltage across resistor R1
Place the ammeter at positions B, C, and D and the voltmeter positions across resistors R2 and R3. Be careful not to touch R3 during measurement as it might be hot.
Fill up the measured values in Table 1.4.

10. A B C D w x y z

11. Equivalent resistance
Supply current
(ampere) I1
(amperes) I2 I3
Σ Current
 15 mA
 10 mA
 2.206 mA
 27.21 mA
Supply voltage
(volt) V1
(volts) V2 V3
 15
15 
15V 
Equivalent resistance R1
(Ohms) R2 R3
 1000 
1500 
6800 
0.551 k
Total conductance G1
(Siemens) G2
(siemens) G3
Σ G
 1 mS
0.667 mS 
 0.147 mS
mS