Title: Facilitator Help Page: Lab 7-2 -- (Do Not Publish)
Course: Basic Electrical Theory and Wiring (Sandbox) > Section: Module 7: Ohm's Law

Measurements and Other Answers

1. Should measure around 10 to 13 volts across light bulb 1 depending upon the transformer.
2. Should measure around 10 to 13 volts across light bulb 2 depending upon the transformer.
3. Should measure around 10 to 13 volts across both light bulbs depending upon the transformer.
4. This shows that in a parallel circuit the voltage stays the same for all branches in the circuit.
5. \(R_t\:=\frac{\:1}{\frac{1}{R1}+\frac{1}{R2}}=\frac{\:1}{\frac{1}{5.6}+\frac{1}{5.6}}=\frac{\:1}{0.17857+0.17857}=\frac{1}{0.3571}=2.8\)      \(I\:=\frac{\:V}{R}=\frac{\:Measured\:V}{R_t}\:=\frac{\:12}{2.8}\:=\:4.28\:A\)   Amps will vary. Should be around 3.5 to 4.3 A.
6. Should measure between 3.5 to 4.3 A.
7. Should measure between 1.7 to 2.2 A.
8. Should measure between 1.7 to 2.2 A.
9. Should measure between 3.5 to 4.3 A.
10. The current goes into the circuit, and then it splits across the light bulbs. After the light bulbs, the current comes back together and returns to ground.
11. I need the student to submit a legible photo of their wiring. I need the light bulbs removed so that I can verify that they are wiring correctly.
12. The last questions are reminders for them to be safe in the lab.

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