Practical Investigation Resistance in Wire Aim: To investigate if the length of wire affects its resistance and find out how the resistance changes when the length of wire increases. Hypothesis: My prediction is that as the length of wire increases‚ the resistance will also increase. This is because current is the flow of electrons in a circuit and voltage makes the electrons flow through the circuit. The electrons have to collide with the atoms in the wire‚ which makes the electrons harder to
Premium Ohm's law Orders of magnitude Wire
because the electrons would bump into more atoms‚ the longer the wire which is like using up its fuel. Material – different materials inherent resistances as they have more or less atoms in them already. Thickness – Thickness affects resistance because the thicker the wire the more paths the electrons have to avoid the atoms. Therefore the cross sectional area is larger so there is less resistance. Temperature – The hotter the wire is the more energy the electrons have to flow faster. Why do we
Premium Electric current Alternating current Volt
affects the resistance of a wire. Reworded: I am going to investigate if changing the length of a wire changes its resistance. I predict that the longer the wire‚ the more resistance it has. Planning and Preparation Independent Variable: The variable I changed was length (cm). Dependent Variable: The variable I measured was resistance (Ω). Fixed Variables: The variables I kept constant to make it a fair test; were‚ the type of wire (nichrome)‚ the thickness of the wire‚ and the temperature of the
Premium Change Resistivity Length
Problem Does temperature affect the resistivity of different sized copper wires? Hypothesis I think that the resistivity will increase with higher temperatures because with higher temperature‚ resistivity is higher due to the fact the atomic lattice structure increases. Background Electrical resistivity is the measurement of how a material opposes the flow of an electrical current. On the other hand‚ electrical conductivity () is the inverse of resistivity. It is the measurement
Premium Electrical conductivity Copper Resistivity
In Reaction 1‚ the mass of the pre-cut copper wire was measured with watch glass on the analytical balance‚ the mass was recorded using as many significant figures as possible on Table 2. The copper wire was bended into a circle and laid flat on the bottom of the 250 mL beaker. Inside the fume hood‚ 4mL 16M of HNO3 was added into the 250mL beaker that contained the copper wire. The copper wire was completely dissolved by swirling the beaker. The observation was recorded in Table 3. For Reaction 2
Premium
and analysis of social issues including urban decay‚ class‚ gender‚ sexuality‚ employment‚ belonging‚ globalization‚ power‚ bureaucracy‚ education and‚ of course‚ race” (Penfold-Mounce et al. 154). With the abundance of social issues included in The Wire‚ some may find it surprising how there is still room for a “vast and complex social network” of characters (Potter198). The show switches the narrative point-of-view often between the police‚ politicians‚ drug dealers‚ corner kids‚ teachers and other
Premium Episode Sociology Television program
In episode 3 of The Wire‚ there are a lot of characters that seem to know nothing more than selling drugs and making money. However‚ in this scene starting at 10:41 and ending at 12:41 shows that these characters are bit more complex and two sided than we are shown. This scene starts with a very fast pan of the pit area until the camera finds D’Angelo. This pan of the courtyard shows how unsafe it is‚ and how the characters are being watched and how they should watch their backs. The pan of the
Premium Jury Not proven Short story
place in her constructed environment and thus is unable to successfully connect to larger society. To fulfil her desire to belong she surrounds her cottage with barbed wire. The close up shot of the wire illustrates to the audience that extreme actions are undertaken to create an atmosphere in which she can belong. The barbed wire indicates that intruders aren’t allowed to enter her surroundings as they could severely impair her sense of place‚ thus highlighting that indeed belonging and place are
Premium English-language films Psychology Raimond Gaita
The Global Sourcing Wire‚ pg. 805 1. Original Wire Quote: * Unit Price = $30 * Packing Costs = $0.75 per unit * Tooling = $6‚000 one-time fixed charge * Freight Cost = $5.20 per hundred pounds Yearly Unit Cost = ((monthly demand*12) * (unit cost + packaging cost)) + tooling charge Yearly Unit Cost = ((60000)*(30+.75)) + 6000 Yearly Unit Cost = (60000*30.75) + 6000 = $1‚851‚000 Yearly Unit Cost = $1‚851‚000 Unit Cost = Yearly Unit Cost / Yearly Demand Unit Cost
Premium Cost Procurement Costs
Daniel Osherow ENGR 1301 5 December 2012 Copper Wire Sizes (EE) The diameter of a copper wire is measured by using a system called the American Wire Gauge also known as AWG. This system has predominantly been used in the United States and Canada since 1857. Using this measurement the cross-sectional area of a gauge is able to be found. We then use this area to determine the wires current carrying capacity. The gauge numbers for wire and diameter values work inversely‚ as when one increases the
Premium Wire Copper Electrical resistance