Introduction In lab experiment 1 we will compare difference of the capacitors of the snap circuits in series and parallel charges. The circuits will have the capacitors placed at different locations depending on the type and we will observe the amount of time it take the LED light to turn off. In experiment two we observed the truth of Ohm’s Law V=IR. We will measure different charges of battery
Early measuring instrument for small electric currents consisted of coil of insulated copper wire wound on a circular non-magnetic frame. Working based on the principle of the tangent law of magnetism. Galvanometer works on the principle of conversion of electrical energy into mechanical energy. When the current flows in a magnetic torque. Galvanometer has a word called sensitivity of galvanometer is defined as the current in micro ampere required to consume one millimeter deflection on a scale placed 1m away from a mirror.
Assume that you have a 10-Ohm and a 20-Ohm resistor in series, connected to a 1.5-Volt battery. You reconnect these resistors so they are wired in parallel. 1.How many paths can the electrons take in this series circuit? The eletrons can take 1 path in this series circuit. 2.How many paths can the electrons take in this parallel circuit?
Then using the radiation sensor to measure the thermal radiation (4 surfaces). Also take notes of the voltage across the cube (voltmeter). Then using the target thermistor resistance at temp of 125 ͦC, 120 ͦC, 115 ͦC etc. (use a fan to cool the leslies cube) Theory: Stefan-Boltzmann law is defined as J=ɛσT4 Where T= radiates energy with radiant heat flux σ= 5.67x10-8 Wm-2 K-4 ɛ= (0,1) the ɛ is equal to when 1 when the object is a black body. In this experiment we are using a sensor that is emitting radiation and we must take into account the corresponding
EC treatment of oil wastewater samples has been tested on a laboratory scale and good removal of COD, color, turbidity and dissolved solids at varying operating conditions were obtained. 2. Materials and methods: 2.1 Experimental equipment: An electrochemical reactor shown in figure, having 500 ml with a speed of agitation of 200 rpm with aluminum electrodes in series arrangement connected to a DC power supply ( 1.5 Amp & 6 Volt ) was used to carry out the experiments. The total 4 no of electrodes are used. The % removals of Chemical Oxidation Demand (COD) were calculated by changing different parameters: pH, electrode gap and operation time.
When the motor stops spinning record the time on a data table. The independent variable was the type of battery used for the motor. The dependent variable was the time the motor spinned. The control variables where the materials used other than the battery. The control group was the D-battery and the experimental group was C, AA, and AAA-Batteries.
Electrochemistry is the study of reactions in which charged particles (ions or electrons) appear in two phases of matter, such as the metallic phase (the electrode) or aqueous phase (the electrolyte). (Lower 2004) These reactions involve the transfer of electric charges between the electrodes and the electrolyte. These cells have two electrodes which are named the anode and the cathode. The anode is the electrode where oxidation occurs and the cathode is the electrode where reduction occurs (Electrochemical cells 2014). Oxidation always occurs simultaneously to reduction and the process of this electron transfer is named a redox reaction (A.Olivier 2010).
Similarly, Fig 5 and Fig 6 show the results for Copper and Stainless Steel respectively. A comparative graph of temperature variation with depth for three materials for 1 KW laser configuration is plotted in Fig 6. A comparative graph for maximum temperature variation with time for different materials for 1KW laser configuration is plotted in Fig
With the materials gathered, set-up VOM to its Ohmmeter function and check the continuity of all the wire connectors that will be used. Next step would be to set resistors 1 and 3 to 500 ohms and resistor 2 to 1000 ohms where one terminal of each battery will remain disconnected to the circuit until notice. After which, one has to connect the terminals of the batteries and gather then data of the voltage measurements of V1 and V2 using the voltmeter (fig.3). After the experiment proper, the student must have to start computing for the necessary values and correct polarities of the resistors through Kirchhoff’s Laws of both current and voltage then evaluate the necessary corrections (if any) in the proposed set
A DC power supply is used to run the fan instead of a car battery. The pH values in reference to the nano fluid stability and change in thermal properties, have been checked, before and after the experiment. So to augment heat transfer for many applications low values of nano fluid pH is needed. Hence a single point calibration technique is used to calibrate the pH