Date Aim: To find resistance of a given wire using metre bridge and hence determine the specific resistance of its material. Apparatus: A meter bridge ‚a Leclanche cell ‚ a galvanometer ‚a resistance box‚ a jockey‚ a resistance wire or resistance coil‚ a metre scale‚ a set square and connecting wires Procedure: 1.Draw the circuit diagram as shown in figure and arrange the apparatus according to the arrangement diagram. 2. Connect the resistance wire or resistance coil whose resistance is
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Aim: To determine the relationship between the length of eureka wire‚ and resistivity of the wire. Hypothesis: As the length of the wire increases‚ the resistance of the wire will increase. Background: Some materials have consistent resistance at the same temperature regardless of how much voltage is applied through them‚ these materials are known as ‘Ohmic’ resistors. This is because they are said to obey Ohm’s law‚ which states that if a voltmetre is used to measure the voltage (V) of
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In the last lab‚ we were asked to find out the Young Modulus of two wires: Copper and Steel. I worked on Copper wire. My hypothesis on the report was that “The Young Modulus of a wire is directly proportional to the extension possible by the object.” Which means‚ the more a wire stretches from its original position the more will be its Young Modulus. It is because‚ F = -kx‚ and –k should be that constant. We were given some wires which were fixed on ceiling of lab on one end and other end had vernier
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Project #15: Make Homemade Glue from Milk With milk‚ white vinegar and baking soda‚ you can make your own glue right at home. Make it an investigatory project by changing up the recipe and testing which results in the strongest glue. You could also try varying the ingredients to make it dry faster‚ or work on different materials (wood vs. plastic vs. paper). Image via wonderhowto.com A.) --WATER FLOW IN PLANT: Can water travel through plant stems? MATERIALS: graduated one
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that is‚ methods of connecting two pieces of wire so as to carry either a signal or an electrical current. Usually‚ these types of connections are achieved using a soldering iron. However‚ it is highly important that the splice or joint be strong regardless of whether solder has been applied or not. Several ways exist in which to accomplish this sort of a connection. Knotted tap joint A tap splice connects a loose wire to a conductor in a perpendicular shape. This
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gauges? 4. What is Gauge Factor? 5. Give at least 5 examples of applications of strain gauges. 6. How are strain gauges attached to objects for measuring strains? VW Spot-Weldable Strain Gauge Designed to measure strain in steel‚ this vibrating wire strain gauge is spot-welded to the surface of the steel. A sensor is then fixed atop the gauge. Readings are obtained with a VW readout or with a data logger. Advantages: Patented low-profile design reduces errors caused by bending. Spot welding
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too much evidence that supports Cecil killing Moose with wire to be able to ignore the option. Cecil was known around the camp for his capability to create trinkets for the other men with wire. He was asked by Mr. Anderson‚ one of the camp leaders‚ to make him a watch strap‚ who also voiced his concerns about him running out of wire. Cecil responded by saying " I still have enough
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Quality of measurement Write Up Wire Wire This diagram shows how we carried out our experiment‚ by connecting 2 wires to the ohmmeter and attached the wires to the samples we used in our experiment. Preliminary Experiment At first in our preliminary experiment my group and me decided to use an ohmmeter instead of a multimeter. We did this as we thought it would make it easier for us to record our results. These are the results we got from our preliminary experiment: Length (mm)
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to conduct electricity. 7. How should the resistances be connected so that the equivalent resistance is increased? (1 Mark) (Ans) The resistances should be connected in series so that the equivalent resistance is increased. 8. The length of the wire is doubled‚ what is the change in its resistivity? (1 Mark) (Ans) There is no change in the resistivity since it only depends upon the type of material used. 9. The combination of resistances shown below has equivalent resistance equal to 12
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