Tuesday, December 9, 2014

Day 24 Motional EMF

In this lab day, we focused on combining all of the basic laws that we knew about for magnetism, and building one general rule for all of these scenarios, called Maxwell's Equation. We also begin talking about inductance and adding it to the list of things we can have in a circuit.

Real life usages of inductors
Prof Mason brought in chip commonly found in many electrical appliances, and showed us that in this chip, all three of what can be in a circuit, a resistor, a capacitor and a new one, an inductor are all being used in this chip. It is to note that the inductor is the shiny copper like wires that are sticking out from the wires















Electromagnetic Induction
We are told to go on an ActivPhysics website, and were to answer question based on electromagnetic induction. All the answers to the questions are below at the bottom pages






 The RL Circuit Simulation
The following questions are answering questions involving a resistor, an inductor and a battery
Question 1

Questions 2-8
 Due to this experiment, we got to understand that just like a capacitor, an inductor is time-dependent, and that in this case, tau (time constant) is equal to L/R, vs how the tau in a capacitor is equal to RC

Introduction to Inductance
In this lab, we are using the oscilloscope in order to find out the behavior of an inductance when a function generator shoots its frequency through it
The oscilloscope reading

The entire circuit connections

Connections to the inductor

Connections to the resistor

Calculations of the experimental inductance and the wire turns

Example problem involving 
The final thing we did for the day was now combining all three pieces of the pie, a resistor, a capacitor, and an inductor into one circuit, an LRC circuit, and solving questions based off it.
Note, in this question, the 750 ohm resistor doesn't affect the entire loop, since it is connected parallel to the capacitor, the inductor and the 120 ohm resistor.

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