Verification of some circuits laws in DC circuits.

1. To verify divider rule with the help of series circuits.
2. To derive equipment resistance of the series circuit both experimentally and practically.

The voltage divider rule is given by,

APPARATUS:

1. One DC Voltmeter (0 - 300V)
2. One DC Ammeter (0 - 5A)
3. Three Resistances
4.  One Multimeter
   
5. DC power supply

Working Procedure: 

Regulated DC power supply provides an adjustable dc supply for electrical and electronic circuits. It has two controls, one is the voltage control and the other is the current limit. The voltage control knob allows one to increase or decrease the voltage at the terminals of the dc power supply within the current limit set by the current limit knob. If the current to the circuit exceeds beyond the limit set by the current limit knob, the voltage will not increase even if the voltage known is used to increase the voltage. So the current control knob of the regulated dc power supply basically works as a protection against any damage to the power supply (it will not protect the circuit).

1. Connect three resistances R1, R2, and R3 in series to a DC power supply.

2. Apply 5 V DC from DC power supply.

3. Take readings of V1, V2, V3, VS using a voltmeter, I using an ammeter and R1, R2, R3 using a

    multimeter.

4. Verify VS=V1+V2+V3 for each set of data. the total resistance of the series circuit

formula is  RS =R1+R2+R3. Compare this with the experimentally obtained value RS=VS/I. Verify

the voltage divider for each set of data.

Data Table:

                           Here,
 
                            R1=1.18Ω

                         R2=.46Ω

                         R3=2.14Ω


                        Rs= R1+R2+R3
                            =1.18+.46+2.14
                            3.78Ω


                      According to the voltage divider rule,

                                V3= R3/R1+R2+R3 X V

                For V= 5v

                                 V3= 1.54/3.78 X 4.98

                                     =2.02

                                  V2= .48/3.78 X 9.95

                                      =1.26 

                                   V1= 1.18/3.78 X 11.55

                                        = 3.60