Aim To measure voltage and current in the circuit and from that figure work out emf and internal resistance of the cell‚ to identify errors involved and deal with them in the most effective way and maintain a safe working environment at all times. Background EMF (electromotive force) is a measure of work done per unit of charge and is measured in volts. Internal resistance is resistance in ohms of the cell. I will be using a 1.5V battery in the experiment. I will measure the voltage and current using
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laws laboratory Abstract: The purpose of this lab is to verify the Ohm’s Law‚ Kirchhoff’s Voltage and Current Laws. As well as the introduction to the voltage division. The Ohm’s Law states that the current through a conductor between two points is directly proportional to the potential difference across the two points (V = IR). The Kirchhoff’s Voltage Law states that the directed sum of the electrical voltage around any closed network is zero. The Kirchhoff’s Current Law states that the algebraic
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TENS 2146 Electric Devices and Measurements Lab 3 Current and Voltage This report was prepared by: L. Wall Fall 2009 Prof. R. Alba-Flores Team Members: J. White‚ L. Wall Conducted on: September 17‚ 2009 Submitted on : September 24‚ 2009 Abstract: In this lab students experimented with light emitting diodes. The student built a basic circuit with two LED’s and resistors in parallel. The results showed that the voltage is the same in parallel. The items that were in series had the
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simple and easy to build • Circuit performance: Very stable +5V output voltage‚ reliable operation • Availability of components: Easy to get‚ uses only very common basic components • Design testing: Based on datasheet example circuit‚ I have used this circuit succesfully as part of many electronics projects • Applications: Part of electronics devices‚ small laboratory power supply • Power supply voltage: Unreglated DC 8-18V power supply • Power supply current: Needed output
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bridge measuring methods The difference between analog and digital measurements The difference between moving iron and moving coil galvanometers How electrodynamic galvanometers work Altering the measuring range for measurements of current and voltage Principles for measuring power Measurement of apparent‚ reactive and active power Principles for measuring the power factor Measuring power factors Understanding how electrical work is measured Measuring electrical work Understanding how frequency
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resistance. The current is the flow of electrons; the current is dependent on the amount of voltage‚ which is applied. Voltage is the push given to the current. The current has to go through a circuit‚ which contains resistance so if you increase that push you also increase the flow of the current. All materials have a slight resistance to electricity factors affecting the resistance are: Length‚ Voltage & Temperature and Surface Area Length The diagram shows the happenings of a wire the
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© Rapid Electronics | An oscilloscope is a test instrument which allows you to look at the ’shape ’ of electrical signals by displaying a graph of voltage against time on its screen. It is like a voltmeter with the valuable extra function of showing how the voltage varies with time. A graticule with a 1cm grid enables you to take measurements of voltage and time from the screen. The graph‚ usually called the trace‚ is drawn by a beam of electrons striking the phosphor coating of the screen making
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forms of AC waves. Waves are visual representations of the variation of a voltage or current over time and are used in many applications throughout technology. Aim The aim of this laboratory was to be able to measure the voltage in a circuit over a specific time using equipment such as an oscilloscope‚ and using it to look at the SINE wave that is generated‚ and also calculate the RMS voltage from the peak voltage and vice versa. Methods and Materials PU-2000 workstation Dual trace
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3/25/13 How does current flow in an AC Circuit. | CrazyEngineers Log in or Sign up Home Search Forums Search Forums Community Community What’s New? What’s New? Members VoiCE Small Talk Help Search... Electrical Wire www.Alibaba.com Login / Sign-Up (Free) Login with Facebook Login / Sign-Up (Free) Wholesale Suppliers & Factory Price Contact Directly & Get Live Quotes! Home Community CE : Technical Discussions Elec tric al | Elec tronic s | Communic ations How
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Symbol Uses of functions Galvanometer A galvanometer is a very sensitive meter which is used to measure tiny currents‚ usually 1mA or less. Ammeter An ammeter is used to measure current. Voltmeter A voltmeter is used to measure voltage. Resistor (Fixed and Variable) Fixed Variable A resistor restricts the flow of current‚ for example to limit the current passing through an LED. A resistor is used with a capacitor in a timing circuit. This type of variable resistor with
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