investigate how the resistance of the wire affects a current flowing through a wire. I know that as resistance changes‚ current changes‚ as Ohm’s law: I = V/R. If one part of an equation changes‚ the equal must be done to the opposite side. To detect how resistance affects current‚ I must first discover what factors affect resistance. These factors are: · Length of the wire if a wire is longer; there are more particles for electrons to move through‚ and therefore more resistance. · Conductivity
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Science practical report (The relationship between voltage and Current) Aim: To find out how current‚ voltage and résistance in a electric circuit are related. Hypothesis The reading for both voltmeter and ammeter will have complete different results in relationship to the resistor‚ voltage and current. That voltmeter will have a higher reading than ammeter. Materials * Power pack * Piece of nidrome * 50 cm long or a resistor * Hear proof mat * 6 connecting wires *
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series circuit only has one path for current to flow. 3) The sum of all the voltages sources is equal to the sum of all the voltage drops. 4) The total resistance in the circuit is equal to the sum of the individual resistances. 3. Calculate the total resistance in the circuit below. Show the formula used. Calculated: = __6.5kΩ____ (Total resistance) Rt = R1+R2+R3 = 1kΩ + 3.3kΩ + 2.2kΩ = 6500 x 10^3= 6.5kΩ 4. Download the Multisim file “Series1” from Doc Sharing‚ Week 3. Run the simulation and
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nanofilm piezoresistors‚ deposited on the oxidized micromachining silicon diaphragm‚ are connected into Wheatstone bridge configuration. For constant voltage VB supply‚ the bridge output V0 is: equation(1) where Ri (i = 1–4) is the resistance of bridge resistors. Thermal drift for offset In Eq. (1)‚ the offset disappears if R1R3 is equal to R2R4. Nonetheless‚ R1R3 is not generally equal to R2R4. The pressure sensor‚ thus‚ has an offset: equation(2) V0=S0K0VB Turn MathJaxon
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2. 3. 4. 5. 6. 7. 8. Write the chemical formula for the following: (a) Calcium Fluoride (b) Iron (II) Bromide Name to kinds of cells (elements) of xylem. Two wires‚ one of manganin and the other of copper have equal lengths and resistances. Which one of these wires will be thicker? What does ‘slaking of lime’ stand for? Why is there a hissing sound during this process? Write the chemical equation for the reaction involved. What is autonomic nervous system? What is the function
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Measured in Amps‚ A 1/1000th of an Amp is a milliamp – mA Power is Voltage x Current Measured in Watts‚ W 1/1000th of a Watt is a milliwatt mW Media Theory & Practice BASIC ELECTRONICS RESISTANCE Almost everything that conducts electricity has a resistance. It doesn’t conduct it perfectly. Resistance is measured in Ohms (Ω) 1000Ω = 1kΩ 1‚000‚000Ω = 1MΩ Media Theory & Practice BASIC ELECTRONICS OHMS LAW Relates Voltage and Current in a simple
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faults in a circuit or system. 2. What is an open circuit? An open circuit is a circuit that has infinite resistance. This results in no current through the open circuit or anything in series with it. It is often referred to as an open. 3. What is the primary symptom of an open circuit? Symptoms of an open circuit include the current through the component drops to zero. The resistance of the open component becomes too high to measure. The applied voltage is measured across the open. 4. What
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would cost $7.2 million at a time where the company is encompassed in a myriad of problems and severe economic crises’. The program has had initial success but its future profitability still remains largely uncertain due to high levels of stress and resistance to change found amongst the company’s employees. Analysis and Evaluation Simmons is a well-established‚ trademark producer of bed mattresses but the company’s organizational structure is not in line with its promulgated set of cultural values
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oscilloscope and a function generator‚ as well as some resistors‚ capacitors and inductors‚ so we can have something to measure on. By the end of this experiment you should be able to tell how to use the equipment to measure voltage‚ current resistance‚ inductance‚ capacitance‚ frequency‚ period‚ rms voltage‚ peak-peak voltage‚ phase‚ as well as knowing how to generate waveforms using the function generator. NOTE: THIS LAB AND THE APPENDICES SERVE AS INTRODUCTIONS TO THE TEST EQUIPMENT. IF YOU
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graphs of the above 3 tables are plotted below. The trend lines and their equations are also calculated by EXCEL From the graph above‚ we can see that the trend lines at frequencies 1kHZ and 10kHz coincides. but that of 0Hz show a different resistance. I think we make a mistake here. We use resistor D for V2 but resistor A for V5. Using the LINEST function of EXCEL: For DC S(kΩ) 0.150769139 0.046926058 I(V) σS (kΩ) 0.001155998 0.040558901 σI (V) For frequency f=1000Hz S(kΩ)
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