Sunday, 3 February 2013

Notes on Current Electricity


Stefan Bozic                                                                   The Energy Ball Report                                                  February 3, 2013.

Differences between Parallel and Series Circuits:
                Series and Parallel circuits are two very common types of circuits with distinct properties. In a series circuit, only one path and direction exists for the current to flow through. In other words, there is only one path from the source through all of the loads and back to the source. This means that the current must flow through all of the loads in the circuit, since all the loads are connected. When paths are disconnected in a series circuit (either by detaching a wire or turning off the source), the electric current itself discontinues, resulting in a power outage and failure for the electrical device. A common example includes a string of old Christmas lights which composes of only one path for the current to flow. Breaking or opening the circuit causes the lights to stop operating because a closed path is no longer met. This is why it is very hard to identify the problem because there are several locations in which the bulb can burn out. All in all, if any of the loads or bulbs are removed, the whole circuit stops operating. In a parallel circuit, it contains multiple paths (parallel) for currents to move along and pass through, meaning that charges can move through any of the several paths found in the circuit. Due to the fact that the function of one device in the circuit does not affect the functions of the other devices in the circuit, this means that a damaged device or switch will not affect the remaining devices. The reasoning behind this is due to the fact that several parallel paths and branches are found in the circuit. This is why parallel circuits are so convenient in household electric wiring as turning off the power for the computer won't affect the power for the lights or the TV. Another reason for their differences is that both circuits calculate current and voltage differently. For example: In a series circuit, the voltage must equal the sum of the voltages from all the resistors, but in a parallel circuit the voltage remains the same for each resistor. For current, the current in a series circuit remains the same due to the fact that there is only path for the flow of electrons but for a parallel circuit, since there are multiple points the current entering these points must equal to the current exiting them.


The Function of the Energy Ball:
                A big reason as to why the energy ball does not work on some individuals has a lot to do with conductivity. Generally speaking, the human body isn't a great conductor due to the fact that is composed of several covalent bounds that according to their properties, are not great conductors of electricity. However, the human body contains dissolved ions in the form of dissolved salt (NaCl), which becomes a good conductor when dissolved in water, due to its present ionic bonds. Due to these properties, the body can act as a form of wire, ensuring that the circuit works between the body and ball (when both metal contacts are touched).   Another reason why a conductor doesn't work is the individual may simply be wearing an insulator. For example: If an individual is wearing gloves, that means that electrons will not be able to pass through, thus not completing the circuit.

Self-Reflection:
                Throughout this learning experience, I've learned many things about myself in terms of work efficiency and collaboration. Basically, I learned that I am more suited towards working independently rather than in a group, due to the fact that working in a group usually leads to several distractions and less work being done. With less focus, this obviously affects goal setting to improve work, as less tasks are completed. In addition when working in a group, there is usually a person who takes the leadership role and leads  the group to the completion of the task. However due to the fact that I am an independent person I was able to discover that I lack collaboration skills, which are needed in daily life (e.g. projects,  jobs in the future). Therefore, I should improve these valuable skills so that I can tackle all tasks with both myself and peers. 

APA Referencing:
Difference between similar terms and objects. (2007, 10 February). Retrieved February 3, 2013,  from
     http://www.differencebetween.net/science/difference-between-series-and-parallel-circuits/
EPA. (2012). Retrieved February 3, 2013,  from Environmental Protection Agency website:
     http://water.epa.gov/type/rsl/monitoring/vms59.cfm
Michael, S. (2012, May 29). allaboutcircuits.com. Retrieved February 3, 2013,  from 
     http://www.allaboutcircuits.com/vol_1/chpt_1/2.html


No comments:

Post a Comment