NAME: PRASAD HASSAN SATHYANARAYANA
EXPERIMENT: Skill 4 – Measure Direct Current, Voltage,
Resistance with DMM Prelab
DATE: 24/04/2020
PRE LAB
1. A
2. A
3. B
4. B
5. D
6. C
7. C
8. A
9. B
10. B
11. C
Experiment Section 1
Measurement for Alkaline cell = 1.5 Volts . Displayed value =1.530 V + or – 0.0005 V
Measurement for Rechargeable cell =1.2 Volts. Displayed value =1.269 + or – 0.005 V
Measured Value Expected
3.980 V + or – .0005 V 3.980 + or – 0.0005 V
7.99 V+ or – 0.005 V 8.01 V + or – 0.005
11.97 V + or – 0.005 V 11.99 V + or – 0.005
16.01 V + or – 0.005 V 15.99 V + or – 0.005
As we can see from the measured value taken from the DMM and Expected value from the
power supply, we can observe slight degree of uncertainty in voltage measurements.
EXPERIMENT SECTION 2
Resistor
Name
colour
coded
R(Ω) Ω) )
Colour
coded
R∆(Ω) Ω) ) Voltage (Ω) V) ∆V (Ω) V)
Calculated
Current I=V/R
(Ω) A) Calculated ∆I(Ω) A)
Measured I
(Ω) A)
Measured ∆I
(Ω) A)
D 8200 410 1.511 0.0005 1.843E-04 9.276E-06 0.0001878 0.00000005
E 39000 1950 1.526 0.0005 3.91282E-05 1.969E-06 0.0000392 0.00000005
F 470000 23500 1.529 0.0005 3.25319E-06 1.637E-07 0.0000035 0.00000005
G 1500000 75000 1.53 0.0005 1.02E-06 5.133E-08 0.0000013 0.00000005
Q2-Q9
