unknown voltage, Current and Direction of flow across the Circuit. Evaluate Pro’s and Con’s of the Mesh and Thevenin’s Theorem. Assumptions : In the Above Circuit current (I1 , I2 , I3 ) is assumed to be flowing in the conventional direction i.e Clockwise . The Source voltage denoted by XX has been assumed to be 86V. Mesh Analysis Mesh analysis is a method that is used to solve planar circuits for the voltage and currents at any place in the circuit. Mesh analysis uses Kirchhoff’s voltage (and
of electrons round the circuit. Ohm's law states that the voltage is equal to the current multiplied by the resistance - V=IR This can be re-arranged to say R=V/I. Ohms law states that in a metal component the ratio of voltage to current remain constant, meaning that the resistance stays the same as long as the temperature remains the
from the Collins advanced science Physics textbook, the Cambridge Advance Science Physics 1 textbook and from notes taken in class. E.M.F or Electro Motive Force is the opposite of potential difference, in that; it is the situation where a voltage is gaining energy. This seems unlikely, but it is required in order to allow an electric circuit to function. An electric current is a flow of electric charge, the charge flows around the circuit, transferring some of its energy to areas of resistance
has been used to form names for instruments that enable the eye or ear to make observation. An oscilloscope is a laboratory instrument that commonly used to display and analyze the waveform of electronic signals. This device draws a graph of signal voltage as a function of time. Oscilloscope usually have two-dimensional graph which electrical potential differences represent by Y-axis (vertical) and time represent by X-axis (horizontal). With positive values going upward and negative values going downward
current around the circuit, so the longer the wire, the higher the current. I can check the voltage, current and resistance to prove that my hypothesis is correct by using ohms law which is V=I*R (V=volts, I=amps and R = resistance). I can re-arrange this formula to find the resistance by saying R=V/I, so when I record my results, I should divide the volts by the current to give me the resistance. The voltage and the resistance are directly proportional. Equipment: A voltammeter. An ammeter
Experiment I Simple Voltage and Current Measurement Objective The objective of this experiment was to measure the Voltage and 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
inductor and the wires are assumed as being ideal. The AC voltage source has an infinitely variable frequency (0≤f≤∞). The values of all the resistors, capacitor, and inductor are constant. In this AC circuit, you can analyze that each resistor is in series with either an inductor, voltage source, or capacitor. Resistor 2 is in series with the capacitor. Resistor 3 is in series with the inductor. Resistor 1 is in series with the AC voltage source. From this, you can realize that they are now in parallel
mainly used as uncontrolled rectifiers to convert single-phase or three- phase AC voltage to a rippled DC voltage. Typically they are constructed of a mixture of differently doped silicon or germanium. Most common are the silicon diodes because they can operate at higher currents and junction temperatures then germanium diodes. All diodes are devices that conduct current in only one direction. Whenever the voltage on the anode is positive with respect to the cathode, the dio... ... middle of paper
experiment's purpose was to find the relationship between current and the length of the wire carrying it. Ohm's results proved that as the wire increased the current decreased. Ohm came up with a formula to state these findings. It is V=IR, where as V=Voltage, I=Current, and R=Resistance. Ohm came up with a statement for this: current is equal to the tension (potential difference) divided by the overall resistance. Units of resistance, or ohms, are named after Georg Ohm. The inverse of resistance is conductance
Ohm's Law Aim:To prove ohms' law, and to study the relationship between current and potential difference (voltage). Hypothesis: The current flowing through a metal wire is proportional to the potential difference across it (providing the temperature is constant). Apparatus: 1. Power Supply 2. Variable resistor 3. Ammeter 4. Voltmeter 5. Resistors 6. Electric wires Diagrams: ========= R1: R2: R1 + R2 (in series): R1 + R2 (in parallel): Method: 1. Set
design challenge is to navigate a robot through a preset course using the knowledge from previous labs and additional research of any kind. Solutions are free from restraint except for the requirement that the voltage source may not exceed 9 volts (standard layout would dictate a 7.2 voltage source). The course layout, dubbed a maze, is a simple square enclosure with 2 barriers protruding from the near and far rails. Black and white tape is laid out inside suggested a course for robots to take or for
localized in such devices as lamps, heaters and resistors in which it predominates, although it is a characteristic of every part of a circuit, including connecting wires and electric transmission lines. In circuits where the current (I) and voltage (V) are related by a simple proportionality constant, as in OHM'S LAW, V = RI, the proportionality constant R is the resistance of the circuit. This discovery was made by Georg Simon Ohm (1787-1854), a German physicist, therefore, Ohm is the
wire ================================================= In this experiment we used a meter stick with wire running down it to measure the resistance at different distances to decide whether resistance increases over distance. We changed the voltage or potential difference 10 times at each length, but in the results table and graph I have only used the first result from each measurement. APPARATUS Meter stick mounted with wire 1 Ammeter 1 Voltmeter Wire 1 Variable resistor
with his and the voltmeter I will be able to work put resistance (R=V/I). As a safety consideration I will keep the Current under 0.5 amps, so the wire doesn't get too hot. · Rheostat- So I can vary the voltage in the circuit to take two readings for each wire at different voltages, I will work out an average of the two to reduce the margin of error. · Switch- A safety consideration, so the wire doesn't overheat and burn if the circuit is left on for too long. I have decided to test
Establishing the Current-Voltage Relationship For a Metal Conductor Investigation- To Establish The Current- Voltage Relationship For A Metal Conductor. In this experiment I will be investigating the current- voltage relationship for a metal conductor. The variables that I need to keep constant in this experiment are: 1. Thickness of the wire. 2. Length of the wire 3. Input of voltage coming from the power supply should be kept constant. 4. Temperature of wire should be
resistance. As the potential difference (voltage) between the ends of conductor is increased the current passing through it increases. If the temperature of the conductor doesn't change, the current that flows is proportional to the voltage applied. This is called Ohms Law. Ohms Law= Potential Difference x Current or Potential Difference = resistance x current or The unit of resistance is measured in Ohms (W). Measuring Resistance The voltage across the resistor is measured using
and the reading can be anything between these values. In theory, if we had eyesight well enough, we could distinguish arbitrary small differences in the temperature. If the reading of the thermometer were converted to an electrical form, such as voltage, we would have an analogue signal. In a mobile communications network, part of the transmission connection uses a radio link and another part uses 2Mbit/s PCM links. Radio transmission is used between the Mobile Station (MS) and the Base Transceiver
whether the voltage affects the amount of gas produced during the electrolysis of sodium chloride solution. Prediction: I think that hydrogen gas will be produced due to the half equation 2H +2e àH this will be produced at the cathode because opposites attract and the hydrogen ions are positive. At the anode I think that chlorine will be produced due to the half equation 2CL -2e àCL the chlorine ions are negative so they are attracted to the positive electrode. I also think that as the voltage is increased
on the LDR (Light Dependant Resistor) affects the Resistance. We can change the intensity using different methods. One method is to increase the voltage, by plugging the power supply to a higher voltage. But this method can be hard as you might not be able to know how higher the voltage is, it might be harder to have access to higher voltage, as it is dangerous. Another way is to change the brightness by adjusting the power supply. Also the distance between the bulb and the LDR is another
oscilloscope. Calculate the voltage amplitude from the amplifier from the minimum and maximum settings. Calculate the gain in decibels. Task 2 Modulate the laser using the transformer. Turn on amplifier circuit. Point laser towards the photo resistor. Connect to the oscilloscope. Adjust the amplifier until you can hear the signal generator signal. Task 3 Connect oscilloscope to amplifier. Modulate laser as before. Point laser towards photo detector. Perform measurements of voltage output for different