Monday, November 2, 2015

Manga Guide to Electricity Alternative

Here I have answered the same questions from the Manga assignments 2-4, but from Getting Started with Electronics by Forrest Mims.

Manga Guide Questions 2:
1. Document yourself creating some static electricity and post to blog. Use the triboelectric series to decide which materials to use to generate static electricity.
2. Contrast the speed of an electron with the speed of electrical motion in one sentence.
The speed of an electron can travel at near the speed of light (186,000 miles per second), but the speed of electrical motion is effected by the power, or pressure, or watts being the voltage x amps moving through a conductor.
3. Briefly explain the relationship between resistance and energy. Use an example from your house.
Electrical motion (current, or energy) will meet resistance when coming in contact with insulators, non-conductors. Electrons can not pass through these materials as readily as their atomic structure does not have as many holes in the outer ring for electrons to pass through. Therefore the electrons' current is longer, rougher path. A good example from my house is when I want to walk up or downstairs, but my dog-friend-matriarch, Queen LaBeefa, wants to walk between my legs limiting the space and speed I can effectively travel up or down the stairs. 
4. What is the difference in AC and DC current? Give and example of each from your daily life. If you get shocked,
Direct Current only flows in one direction. Alternative current can be reversed. Many devices in my house convert AC from the wall outlet (which runs on AC because AC is more effective over long distances) in order to power their DC circuits. 
5. Determine the equivalent resistance of a 6.0 Ω and a 8.0 Ω resistor if …
a. … connected in series.
14.0Ω
b. … connected in parallel.
3.43Ω

Manga Guide Questions 3:
1. What is the relationship between heat and electricity. Please provide a metaphor.
Heat is the vibration of atoms. When an electrical current flows the atoms vibrate therefore when you increase a current you increase the vibration and thus heat. It's like if you fart in water it bubbles. Sort of. 
2. Why is it warm near an incandescent light bulb?
Incandescent light is a result of heat.
3. What is a superconductor? What are they used for in real life? You may have to look this up. How could one make a metal a superconductor?
Superconductors conduct electricity with a resistance of 0 at certain temperatures. Superconductors can be used to "float" materials to reduce friction or in biomagnetism techniques like MRI. Under high pressure metals can reach a state in which they are superconductive.
4. What is Ampere's Law?
When there is a current there is a magnetic field surrounding it.  
5. If current of the same size flows in the same direction in two electric wires placed side by side, what happens?
The effect of the magnetic field from the current of the one wire opposes the direction of that of the second wire and therefore they are magnetically attracted .
6. What happens if current of the same size flows in opposite directions in two electric wires placed side by side?
The magnetic field generated from the current of one wire will move in the same direction of that of the second wire and therefor their polarities magnetic repulse one another.

Manga Guide Questions 4:
1. What is an example of a semiconductor device?
A semiconductor can be a conductor or an insulator. By sharing electrons in its outer shell it forms a a regular arrangement called a crystal. But pure silicon is not very useful. Silicon is often doped with phosphorous and boron, or other additives to improve its electronic properties. A semiconductive device is something like a diode or a transistor that can be manipulated through magnetic current. It's crystalline structure is doped with impurities to control the positive and negative charge throughtout by structuring then umber of holes and electrons within the semiconductor.
2. Why is silicon used in the manufacture of semiconductors?
Silicon has half as many electrons in its outer shell as it need to fill the outer ring. Therefore it is apt to form crystalline structures with other silicon atoms by sharing electrons. 
3. Discuss the difference using an example of the difference between and N-type and P-type semiconductor.
An N-Type semiconductor has had impurities added which place more electrodes than normal in the semiconductor's outer ring for to share when attracted to other atoms. A P-Type has more holes available for electrons to be shared with in their structure.
4. In your own works describe what a diode does and the role of N and P type semiconductors.
A diode limits the flow of electricity to one direction. If a semiconductors electrons and holes are flowing away from its junction then no current flows through the diode. However, if they are repelled toward the junction then a current is established. 
5. What is rectification?
The transformation of AC to DC.
6. What causes color in an LED? Give an example of what causes a particular color.
The wavelength of the light emitted determines the color. 
7. What is the relationship between base current and collector current in a transistor?
The base current essentially determines if the collector is on or off. Once the transistor reaches a certain voltage current flows from the emitter to the collector. If it is a forward-biased transistor then the signal will amplify the base current. 
8. What are the advantages of a transistor over a switch?
A transistor can be flipped by the current rather than needing physical interaction. It also limits the current meaning the current is variable rather simply being connected or disconnected. 



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