Part III: Parallel Circuit Purpose: To analyze mathematical relationships between quantities for parallel circuits. Getting Ready: Navigate to the DC Circuit Builder Interactive at The Physics Classroom Plain text link: https://www.physicsclassroom.com/Physics-Interactives/Electric-Circuits Page 4 of 7 Note that the electric potential (voltage) values are listed on the diagram at the corner of every square on the grid. Current values are listed on the ammeters. To change a battery voltage or a resistor value, select the second icon at the bottom of the screen; a magnifying glass appears above the circuit element. Adjust the voltage or the resistance using the up/down arrows next to the digital meter. Build, Measure, and Analyze: Build the circuit shown with three resistors, four ammeters and a battery. Determine the values of current (amps) and electric pressure (volts) at the indicated locations. For your lab report, write the required values on the circuit shown, or replace the circuit shown with a screenshot of your circuit in the sim with all the required values. V = Vults V = yum. V = you; V = win Amw V = \\mll' V = Volts V = Vans V = min 1. Set the resistor and battery values. For resistors 1, 2, and 3, calculate the electric potentia difference and fill in table 4. Table 4, Part 3. Electric potential difference, current and resistance Element Electric Potential Current (1) Resistance (R) Difference (AV) B 50 1 20 2 20 3 20 2. How does the electric potential difference across each resistor (AV1, AVz, AV3) compare to one another and to the electric potential difference across the battery (AVE)? Page 5 of 7 3. How does the current in the battery (15) compare to the summative current in the three resistors (11 + 12 + 13)? 5. Calculate the ratio of electric potential difference to current for the battery. AVB/IB = How does this ratio compare to the resistance values of the resistor? 6. Alter the values of the battery voltage and the resistance of the resistors so that each resistor has a different resistance. Then make measurements and complete table 5. Attach a screenshot of your set-up. Table 5, Part 3. Electric potential difference, current and resistance Element Electric Potential Current (1) Resistance (R) Difference (AV) wNi'W