Factors Which Affect the Resistance of a Wire To start off this experiment I feel that it is suitable to explain the main facts of this study. Below is a section explaining the resistance in detail. Facts on Resistance: I have shown how resistance occurs. · WIRE · ATOMS · ELECTRONS Resistance occurs when the electrons traveling along the wire collide with the atoms of the wire. These collisions slow down the flow of electrons causing resistance. Resistance is a
Current. Upon completion of this experiment I was able to: 1) Set the DC power supply to a specific voltage. 2) Properly connect the voltmeter to measure voltage. 3) Measure current with the ammeter. 4) Measure resistance with the ohmmeter. 5) Determine the accuracy of a given meter reading. Theory The theory required for this experiment was an understanding of Ohm’s Law. Ohm’s Law is the algebraic relationship between voltage and current for a resistor. Resistance is the
Wire Resistance Investigation Planning -------- Aim --- In this experiment the resistance change in a wire will be investigated. I will be investigating if the thickness or cross-sectional diameter of the wire affects the resistance. Variables --------- The input variable will be the thickness of the wire to the nearest millimetre. The output variable will be the readings on the ammeter and voltmeters. The controlled variables will be the length of wire and the current
wiped my palms against my shirt, and swung my arms in a yin-yang motion, inhaled and exhaled Taichi-istically to calm my mind and my limbs. 2498… 2499… 2500! After 1 hour, I completed the 1000th loop. I held my breath while trembling, pushing the ohmmeter leads to the end. Blink! 110! The sweetest number in the world! I could have finished this task by brute force (either with loop-by-loop winding or with the mystic power of notes). But for many Kungfu Panda fans, the most memorable moment of the
There are hundreds of occupation around the world, few of which anyone would want to do. Being an electrician is one of them. Electrician keep lighting, electrical system around a building and generator working. Being an electrician can also be dangerous. You can die if you get Electrocuted by touching cables that have running current through them. Electrician work outside and inside during construction site, in businesses, factories or in homes. Working as an electrician mean bending conduit, standing
Thermistor Experiment Aim: To investigate how the temperature affects the resistance of a thermistor Background Information: The resistance determines the difficulty in which energy can pass through a circuit. It is measured in Ohms (Ω) and the equation for this is; Resistance (Ω) = Voltage (V) Current (I) A thermistor is a type of variable resistor that's resistance is affected by heat and in my investigation I am experimenting with the manor in which temperate affects
BIPOLAR JUNCTION TRANSISTOR 121. In what decade was the first transistor created? A) 1930s B) 1940s C) 1950s D) 1960s 122. How many layers of material does a transistor have? A) 1 B) 2 C) 3 D) 4 123. What is the ratio of the total width to that of the center layer for a transistor? A) 1:15 B) 1:150 C) 15:1 D) 150:1 124. Which of the following is (are) the terminal(s) of a transistor? A) Emitter B) Base C) Collector D) All of the above 125. List the
=================== Resistance is an opposition to the flow of electrons. It is the potential difference divided by the current. How is resistance measured? =========================== Resistance is measured in ohms (W) using an ohmmeter ( W ). Ohms Law ======== Resistance is worked out using the following scientific model (Reference from Roger Muncaster's A level Physics): r = resistivity (Wm) l = length (cm) A = Cross sectional area (cm ) K = Constant
I would like to introduce you to Mike; he has been an automotive technician for 30 years. Mike is an ASE certified Master Automotive Technician and a Toyota Master Diagnostic Specialist. I interviewed Mike to get a better understanding of how math and problem solving training will help me in this career field. I started my interview by asking Mike how important math is to an automotive technician. Is it something you use daily or just occasionally? He indicated that math is applied every day and
The Effect of Intensity on the Power of Solar Cells This experiment involves changing the intensity of light falling on different cells and measuring their power outputs. Higher intensity of light means that there are more photons hitting the surface of the cell per unit area per second. The more hit the cell, the more rapidly the electrons move across the p-n junction, so the larger the emf produced. If the rate of movement of electrons is inhibited, then the greater
Before Kamerlign Onnes, in 1908, was able to liquefy helium and bring its temperature down to about 1K, it had been known that the resistance of a metal falls when cooled below room temperature. However, it was not known what value the resistance would approach if the temperature was reduced towards 0K until Onnes, while experimenting with platinum, discovered that, its resistance fell when cooled to a very low value that depended on the metal’s purity. As the temperature of mercury was reduced