ALUND Lab 4 Compound Circuits

.docx

School

Grand Canyon University *

*We aren’t endorsed by this school

Course

112

Subject

Electrical Engineering

Date

Feb 20, 2024

Type

docx

Pages

Uploaded by ChiefRock102849

PHY 112 L Lab 4: Compound Circuits 1. Testable Question: Part A. How is the current affected by the voltage in a circuit? 2. Hypothesis: Part A. If the voltage increased than the current will increase because the voltage is moving the electrons faster through the current. 3. Variables: Work with your team. List and identify the different variables used in the experiment. Be sure to include each variable’s symbol in parentheses. Control(s): resistance (R) Independent: Current (I) Dependent: Voltage (V) 4. Experimental Design: i R ( Ω ) V (v) I (A) 1 – 5 R1 V 1-5 I 1-5 1 – 5 R2 V 1-5 I 1-5 1 – 5 R3 V 1-5 I 1-5 1 – 5 R4 V 1-5 I 1-5 1 – 5 R5 V 1-5 I 1-5 5. Materials:  DC power supply  Ammeter  Resistors (5)  Circuit wires  Alligator clips 6. Procedures: 1. Obtain 5 different resistors

PHY 112 L 2. For each resisir, use the colored diagram provided by the professor and record the values obtained as the calulayted resistance. Repeat for each resistor 3. Measure the resistance of each resitor using the volmeter and record as the measured resistance. 4. For the next portion, there will be five incrimits of 2 (2, 4, 6, 8, 10) which the DC power supply will be at. 5. Putting the DC supply to 2 volts, measure the voltage through each resitor and record in measures voltage. Do this for each resitor at 2V, 4V, 6V, 8V, and 10V 6. After the voltages have been obtained, the same procedure will be performed but to find the current through the resitors. 7. Repeat the same intervals for each resitor. For the compound circuit: 1. Draw your circuit diagram (schematic). Label all the resistors and power supply voltage values. You can either make it from scratch, in Paint or draw it out on white paper or on a white board and then photograph it. Include that as your Setup figure for the Procedures. 2. Draw your circuit diagram again, but this time include ammeters and voltmeters everywhere you plan to measure current and voltage, respectively. Include this before the steps in the procedure for which the placement of the ammeter and voltmeter are described. Do not include the values of the power supply voltage and resistances, just include the symbols for these (include subscripts on the resistors). 3. Use the DMM as an ohmmeter to measure all the resistances before connecting the circuit and then, for the entire circuit before hooking up the power supply. Alternatively, you can use the results of the Ohm’s law measurements to achieve a precise value for the resistance of each resistor.

PHY 112 L 7. Data Table: Table 1: Resistors resistor bands calculate (ohms) measured (ohms) % error R1 orange-orange brown 330 334 1.21 R2 red-red brown 220 244 10.9 R3 orange-black brown 300 326 8.67 R4 green-blue brown 560 618 10.4 R5 red-purple brown 270 262 2.96 Table 2: Ohms Law Experiment - Resistor 1 OO B DC supply voltage (v) measure s voltage (V) calculated current (A) measured current (A) error (of current) % error (of current) measured (mA) 1.99 1.97 0.00590 0.00590 0.0003 0.030 5.90 3.00 2.99 0.00895 0.00880 0.0170 1.699 8.80 4.00 3.96 0.01186 0.01180 0.0047 0.475 11.80 5.00 4.98 0.01491 0.01470 0.0141 1.410 14.70 6.00 5.97 0.01787 0.01780 0.0042 0.415 17.80 Table 3: Ohms Law Experiment - Resistor 2

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version