Unit 4 circuits and ohm’s law using the software below. You will complete this lab and at the bottom include a screen shot of your set-up.

This lab requires each student create his or her own simulated circuits using the phet circuit construction kit virtual lab (be sure you use the html5 version, not the java version). Https://phet.Colorado.Edu/sims/html/circuit-construction-kit-dc-virtual-lab/latest/circuit-construction-kit-dc-virtual-lab_en.Html

after opening the lab, create the following circuit:

part 1: ohm’s law

the simulation shows electrons flowing from the negative terminal of the battery (black end), through the resistor (light bulb) and the positive terminal (copper colored end). Change the current direction by selecting “conventional current.” This shows the direction physicists thought current was flowing before the existence of the electron was discovered.

Set the initial voltage and resistance using letters from your first and last name as follows:

first letter of first name

voltage

first letter of last name

resistance

a-c

5 v

a-c

5 ?

d-f

6 v

d-f

6 ?

g-i

7 v

g-i

7 ?

j-l

8 v

j-l

8 ?

m-o

9 v

m-o

9 ?

p-r

10 v

p-r

10 ?

s-u

11 v

s-u

11 ?

v-z

12 v

v-z

12 ?

change the setting on the battery and light bulb by clicking on the component and using the arrows and/or slider at the bottom of the simulation screen.

Note: in all answers in this lab, the answer is not correct unless it contains both the correct number and the correct unit.

Enter the values you are using in the table below. Include units with all numbers.

Voltage

resistance

current

substitute the voltage (v) and the resistance (r) into ohm’s law to demonstrate the current reading is correct.

Result of this calculation =

now double the voltage. Indicate in the following table the values of the circuit after making the change.

Voltage

resistance

current

so when the voltage is doubled, the current is (put an x next to your choice)