1FORMAL REPORT # 1
Experiment # 7
Title: SERIES-PARALLEL CIRCUITS
Name: AMISH PATEL
Student #: 000356107
Lab Partner’s Name: MANPREET SINGH
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Statement of Purpose
In-Class Work and Report Sheets Attached
GRADE: ______________ out of 40
1. To apply resistive circuit laws to series-parallel circuits. 2. To apply the voltage divider and current divider principles to series-parallel combination.
1. D.C Power supply
2. Digital multimeter
4. Breadboard and component kit
PART 1- VOLTAGE AND CURRENT RELATIONSHIPS
Where R1=560 Ω, R2=330 Ω, R3=470 Ω and E=18 V
1. Construct the circuit as shown in figure #6 on your breadboard that is connect resistor R1 in series with two resistor R2 and R3 which are connected in parallel. 2. Adjust the supply voltage to 18V in D.C Power supply.
3. Measure the values of IT, I1, I2 and I3 with the help of Digital multimeter and note down the readings in table 1. 4. Now Measure the values of V1, V2 and V3 with the help of multimeter and note down the readings in table 1 and table 2 as well. 5. Switch OFF the circuit and disconnect the meters.
6. Now connect Oscilloscope to the circuit and measure the values of V1, V2 and V3 respectively and note down readings in table 2.
Measured by DMM
Measured by DMM
If the resistors are connected in series then all the resistors has same amount of current equal to total current, so the current across resistor R1 is same as the total current.
Measured by DMM
Measured by Oscilloscope
If the resistors are connected in parallel then all the resistors which are connected in parallel has same amount of voltage, so V2 and V3 has same amount of voltage.
The Relation between Voltage and Current is that the value of current remain same in all the resistors connected in series circuit, while voltage remain same in all resistors connected in parallel circuit. PART 2- RESISTANCE RELATIONSHIPS
Where R1=560 Ω, R2=1.2 KΩ, R3=4.7 KΩ, R4=2.2Ω and R5=2.7 KΩ
1. Construct the circuit as shown in Figure #7 on your breadboard. 2. Measure the resistance between points X and Y.
3. Leave Points X and Y open circuited and measure the resistance across Points A and B. 4. Now remove the jumper wire which is connected between Points A and P and then measure resistance across RPB and RAB.
Resistance between points
R1 does not affect the results as it is connected in series with R4 and R5.
The value measure of any resistance of resistor placed in circuit will not affect the resistance of other resistor in the circuit. PART 3- OPEN AND SHORT CIRCUITS
Where R1=3.3 KΩ, R2=2.2 KΩ, R3=1.0 KΩ, R4=2.7 KΩ and R5= 560 Ω
1. Construct the circuit as shown in Figure #8 on your breadboard. 2. Measure and record the values of all resistor connected in the circuit one by one in table4. 3. Now measure and record the resistance between points (A-B) and points (X-Y). 4. Insert a jumper wire between points X and Y (which means...
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