Join over 1.2 million students every month Accelerate your learning by 29% Unlimited access from just £6.99 per month To test the ohmic and non-ohmic behavior in a resistor and a bulb Extracts from this document... Shiba YounusTo test the ohmic and non-ohmic behavior in a resistor and a bulbOhm’s Law: When the temperature of a metallic conductor is kept constant, the current through the conductor is proportional to the potential difference across it; This statement is known as Ohm’s law. Materials obeying Ohm’s law thus have a constant resistance at constant temperature. A graph of I (current) versus V (voltage) gives a straight line through the origin if the material obeys Ohm’s law. Most materials obey Ohm’s law at low temperatures, but as temperature increases deviations from this law are seen.Experiment 1: Aim: To test a bulb for ohmic or non-ohmic behavior.Hypothesis: It is presumed that the light bulb will obey Ohm’s law as long as the current through it is small.

12.0774.614.0681.316.0287.218.0290.520.93Lamp brokenCalculation 1:  R = V/IExperiment 2: Aim: To test a resistor for ohmic or non-ohmic behavior.Hypothesis: It is presumed that the resistor will show an ohmic behavior i.e. the voltage across the resistor is presumed to be proportional to the current through it.Material: Variables:Dependent variables: currentIndependent variables: voltageControlled variables: Resistor, ammeter, voltmeter, power supply, wiresMethod: ...read more.Sam'S Club Fort Myers Tires Improvement: In this experiment, the ohmic or non-ohmic behavior was tested using only one bulb and one resistor. Black Lab Puppies Redding CaFor a better conclusion it might be reasonable to test ohm’s law with more than one bulb and resistor.Plum & Bow Bouquet Duvet Cover

Conclusion: Experiment one: From the discussion and introduction, it could be concluded that the bulb shows a non-ohmic behavior since with increasing current, the temperature inside it increases and so does the resistance. The hypothesis is in agreement with the result, except for the fact that in this case, the bulb does not show any ohmic behavior initially either.Experiment two: As mentioned earlier in the discussion, the resistor shows an ohmic behavior since increasing current does not lead to a significant increase in temperature in this case, and hence the resistance remains constant throughout the experiment. The hypothesis holds true with respect to the result gained from the experiment. This student written piece of work is one of many that can be found in our International Baccalaureate Physics section. Found what you're looking for? Start learning 29% faster today Just £6.99 a month Related International Baccalaureate Physics essays Hooke's law and using Microsoft excel with drawing the graph and find the gradient.

The results showed that the difference value in spring constant means that the stiffness of the springs is also different. Testing ohms law on a light bulb and a resistor connected to a source ... Table 1.1 the current and resistance of a light bulb when the voltage is varied. Resistor Voltage(V) Current(milli-amperes) Resistance(?) 0.53�3 2.00�3 265�3 1.60�3 6.00�3 266�3 2.78�3 10.4�3 267�3 4.33�3 16.3�3 265�3 5.84�3 22.0�3 265�3 7.75�3 29.2�3 265�3 9.29�3 35.1�3 264�3 11.16�3 42.2�3 264�3 13.22�3 50.1�3 263�3 14.81�3 56.2�3 263�3 Incandescent 100 watt light bulb ban: A bright Idea ? Starting price: Incandescent 60 watts - 0.60 $ CFL 13 watt - 3.00 $ GeoBulb 7 watt - 120 $ ZetaLux 7 watt - 50 $ Most light bulbs can be split in to two groups. Light bulbs with filament and light bulbs without. RESISTIVITY OF A MATERIAL It is equals to1.46�10-7m2 . The average resistance is 0.268?. So use the formula, is variable, so is equals to1.3�10-8?m.

The criteria value of the resistivity is, so our experiment error is 23.5%. Skills: Manipulative skill: When we change the wire to do the experiment, we must turn off the power first. It can also be defined as the ratio of voltage per unit current through it, R=V/I. We know that the resistance in metals is mainly caused by the collisions of numerous electrons which are constantly vibrating and flowing through the external circuit. HL Physics Revision Notes These electrons are stimulated to fall down and emit light of a particular frequency Or: Lower energy level electrons are pumped up to higher energy levels and stimulated to fall to energy levels corresponding to specific frequencies, producing laser light. How does the sinkage depth of a tyre affect its rolling resistance ? is being applied and pushes the bicycle deep into the sand bed due to this flexing phenomenon . From the above data we cannot establish linear relationship between air pressure and sinkage depth .

There are many factors that affect the sinkage depth of a tire due to the air pressure . Experiment to show the application of Kirchhoffs Voltage Law & Kirchhoffs Current Law in ... noting the direction of all the voltage drops, either positive or negative, and returning back to the same starting point. It is important to maintain the same direction either clockwise or anti-clockwise or the final voltage sum will not be equal to zero.About Droid Tesla Software DroidTesla is a simple and powerful SPICE engine. SPICE is an acronym for Simulation Program with Integrated Circuit Emphasis and was inspired by the need to accurately model devices used in integrated circuit design. DroidTesla simulator solves basic resistive circuits using Kirchoff�s Current Law (KCL) in much the same way a student in a circuits class would,the simulator systematically forms a matrix in accordance with KCL and then proceeds to solve for the unknown quantities using various algebraic

techniques such as Gaussian elimination and sparse matrix techniques. For non-linear components, such as the diode and BJT ,DroidTesla engine searching for the approximate solution by making an initial guess at an answer and then improving the solution with successive calculations built upon this guess. This is called an iterative process.DroidTesla simulation uses the Newton-Raphson iterative algorithm to solve circuits with non-linear I/V relationships. For reactive elements(capacitors and inductors),the DroidTesla uses numeric integration methods to approximate the state of the reactive elements as a function of time. DroidTesla offers the Trapezoidal(I'll add a GEAR method later) integration methods to approximate the state of the reactive elements. Although for most circuits, both methods will provide almost identical results, it is generally regarded that the Gear method is more stable, but trapezoidal method is faster and more accurate. Droid Tesla For Now Can Simulate