Electromagnetic Induction and Faradays Law

Electromagnetic induction (also known as Faradays law of electromagnetic induction or just induction, but not to be confused with inductive reasoning), is a process where a conductor placed in a changing magnetic field (or a conductor moving through a stationary magnetic field) causes the production of a voltage across the conductor. This process of electromagnetic induction, in turn, causes an electrical current—it is said to induce the current. Discovery of Electromagnetic Induction Michael Faraday is given credit for the discovery of electromagnetic induction in 1831, though some others had noted similar behavior in the years prior to this. The formal name for the physics equation that defines the behavior of an induced electromagnetic field from the magnetic flux (change in a magnetic field) is Faradays law of electromagnetic induction. The process of electromagnetic induction works in reverse as well, so that a moving electrical charge generates a magnetic field. In fact, a traditional magnet  is the result of the individual motion of the electrons within the individual atoms of the magnet, aligned so that the generated magnetic field is in a uniform direction. In non-magnetic materials, the electrons move in such a way that the individual magnetic fields point in different directions, so they cancel each other out and the net magnetic field generated is negligible. Maxwell-Faraday Equation The more generalized equation is one of Maxwells equations, called the Maxwell-Faraday equation, which defines the relationship between changes in electrical fields and magnetic fields. It takes the form of: ∇Ãâ€"E – ∂B / ∂t where the ∇Ãâ€" notation is known as the curl operation, the E is the electric field (a vector quantity) and B is the magnetic field (also a vector quantity). The symbols ∂ represent the partial differentials, so the right-hand of the equation is the negative partial differential of the magnetic field with respect to time. Both E and B are changing in terms of time t, and since they are moving the position of the fields are also changing.

Demand Curve and Supply Curve - 2333 Words

Literature Review Demand and supply have been generalized to explain macroeconomic variables in a market economy. The Aggregate Demand-Aggregate Supply model is the most direct application of supply and demand to macroeconomics. Compared to microeconomic uses of demand and supply, different theoretical considerations apply to such macroeconomic counterparts as aggregate demand and aggregate supply. The AD-AS or Aggregate Demand-Aggregate Supply model is a macroeconomic model that explains price level and output through the relationship of aggregate demand and aggregate supply. It is based on the theory of John Maynard Keynes presented in his work â€Å"The General Theory of Employment, Interest, and Money†. It is one of the primary simplified†¦show more content†¦The vertical axis is the price level. The horizontal axis is output or income. The short-run aggregate supply curve is downward sloping with slope equal to (1/a) while the long-run aggregate supply curve is vertical with no sl ope. The reason that the short-term aggregate supply curve is upward sloping is a bit more complex. Factors that determine the slope of AD-AS curve model The slope of AD curve reflects the extent to which the real balances change the equilibrium level of spending, taking both assets and goods markets into consideration. An increase in real balances will lead to a larger increase in equilibrium income and spending, the smaller the interest responsiveness of money demand and the higher the interest responsiveness of investment demand. An increase in real balances leads to a larger level of income and spending, the larger the value of multiplier and the smaller the income response of money demand.This implies that the AD curve is flatter, smaller is the interest responsiveness of the demand for money and larger is the interest responsiveness of investment demand. Also, the AD curve is flatter; the larger is the multiplier and the smaller the income responsiveness of the demand for money. We know that aggregate demand is comprised of C(Y - T) + I(r) + G + NX(e) = Y. Thus, a decrease in any one of these terms will leadShow MoreRelatedDeman d Curve, Supply Curve Equilibrium. The Demand Curve995 Words   |  4 PagesDemand Curve, Supply Curve Equilibrium The demand curve can be shown in a graph and it reflects the relationship between the price and amount of a commodity that people are able and willing to buy at a set price. The demand curve slopes downward because are more prone to buying a good as the price declines. For example, coffee drinkers may be willing to buy more cups of Starbucks coffee if a medium cup of regular coffee sells for $1.49 versus $2.10. Instead of buying one cup a day they may buyRead MoreDemand Curve And The Supply Curve1302 Words   |  6 Pagesshows that there is a gap between supply and demand. This is demonstrated by two curves which are the demand curve and the supply curve. Consumers of a product are encouraged to increase purchasing when the government decreases prices and as price rises to decrease purchasing, whereas, suppliers are encouraged to increase production when prices are high and decrease production when prices fall. The market model shows that at one point the demand curve and the supply curve intersect. 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(d) Now assume the government createsRead MoreSupply and Demand and Aggregate Supply Curve.1966 Words   |  8 Pagesbusinesses expect future profits to fall. a. Explain for each event whether it changes short-run aggregate supply, long-run aggregate supply, aggregate demand, or some combination of them. A deep recession in the world economy decreases aggregate demand. A sharp rise in oil prices decreases short-run aggregate supply. The expectation of lower future profits decreases investment and decreases aggregate demand. b. Explain the separate effects of each event on U.S. real GDP and the price level, starting fromRead MoreEconomics : The Supply And Demand Curve Essay1441 Words   |  6 Pageswould discuss Uber’s pricing in term of facing the fundamental concept of economics: the supply and demand curve. Uber is one of the pioneers of ride-sharing and its’ brand name has dominated headlines over the past year alongside mentions of the â€Å"sharing economy†. 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The Princess Bride Movie Review Free Essays

Savannah Sheets 9th English 24 May 2012 The Princess Bride Movie Review â€Å"Hello. My name is Inigo Montoya. You killed my father. We will write a custom essay sample on The Princess Bride Movie Review or any similar topic only for you Order Now Prepare to die. † This is one of the many humorous lines in the movie, The Princess Bride. The Princess Bride is a romantic, action-comedy film and was directed by Rob Reiner in 1987. The plot of this movie is a fairytale narrated by a grandfather to his grandson full of action in attempt of getting a kidnapped princess back to her childhood love the day before her planned marriage with the prince. The main characters, Buttercup the princess (Robin Wright) and Westley (Cary Elwes) fall in love when they are just two young teenagers shown at the beginning of the story. Fate separates them for 5 years and soon brings them back together before she gets married to Prince Humperdinck. Westley, her childhood sweetheart, wears a disguise and follows 3 men who have kidnapped Princess Buttercup to get her back. His wits help him team up with the kidnappers and overcome Prince Humperdinck and his ‘army’. Westley is caught but soon escapes with the help of Fezzik the Giant and Inigo Montoya. They all jump out of the window and ride away on horses. Westley and Buttercup marry and live happily ever after. The Princess Bride is often compared to the movies Ella Enchanted, Spy Kids, and Stardust, all of which have different aspects of themes that were similarly incorporated in the movie. It took place in the fictional countries of Florin and Guilder, sometime between the establishment of Europe and after the manufacturing of blue jeans. The story reaches out mostly to the young adult audience, but would easily be satisfactory to people of other audiences as well. The events in the story are highly unlikely, but are well-structured and amusing to the viewers which help it to be easier to understand. The dialogue is meant to sound like the story was based from the medieval times, with a twist of comedy. Finally, the themes portrayed in this movie were that true love conquers all. Westley, even after all of the time spent apart, found his true love and in the end it all worked out with a happily ever after. Good versus evil is also a theme in this movie because Prince Humperdinck tries to marry Princess Buttercup knowing that she is still in love with Westley. Even though it was an arranged marriage, Prince Humperdinck tried to convince her that it would take time for them to fall in love, but they would eventually get used to it. Princess Buttercup has a nightmare which opens her eyes. She dreams about the marriage which is interrupted by who is known as â€Å"The Ancient Boo-er†. She tells Buttercup that she is a disgrace because she has power but isn’t using it to her advantage and is letting down the people of her country. How to cite The Princess Bride Movie Review, Papers