A.S. Physics Investigations

A.S. Physics Investigations Aim The aim of the investigating is to find step forward the potential and internal resistance of a cell. Apparatus Resistors (values: 10?,20,30?,39?,51?,62?,68?,82?,91?,100?) Connecting conducting wires Multimeters, measuring stream and Voltage Cell Crocodile Clips Circuit plot [pic]Fig 1 Safety With the use of a 1.5V cell, it is very dangerous, as shocks may occur if equipment is not handled with care. The heat produced by the wire is overly very hazardous ca development overheating, given that the suffer departure through it causes it to heat up and may by chance be very dangerous. In order to prevent this, I pass on be leaving 10s in surrounded by readings allowing components to cool down. Variables I go away be ever-changing the corrupt resistivity, actual, final stage p.d and temperature. Since mending the load resistor will welcome an effect on the p.d and current, furthermore the te mperature would have to be controlled as increased current raises the resistance and causes inaccuracy. In order to control the variables, I will be using the same cell, allowing a stable bring home the bacon of potential difference and current. In addition I will be bout off the cell between readings for 10s, avoiding heating up of components and fish fillet changes to the internal resistance.

Moreover I will suck with big resistors, reducing draining. Lastly I will handbill the potential before and after the experiment, to assure the precision of the cell. Method first I will set up all Components (unde r Apparatus) embroil as shown on fig 1. In! order for this investigation to be a fair test, I will hump forth the variables (shown above) to achieve an accurate investigation. later building the perimeter (fig1) I will step the emf of the cell when the traffic circle is open, and measure it after the investigation. This would give me an idea of the draining of the cell. After that I am going to find out the current and the terminal p.d of the cell. I will be changing the load resistors (R) with...If you privation to get a full essay, order it on our website: BestEssayCheap.com

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