A.S. Physics Investigations

A.S. Physics Investigations Aim The aim of the investigation is to find pop the potential and internal resistance of a cell. Apparatus Resistors (values: 10?,20,30?,39?,51?,62?,68?,82?,91?,100?) Connecting cables 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 cavictimization overheating, given that the alive departure through it causes it to heat up and may perhaps 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 committal immunity, occurrent, final stage p.d and temperature. Since mending the load resistor will start an effect on the p.d and current, furthermore the temperature would have t o 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 potentiality and current. In addition I will be good turn off the cell between readings for 10s, avoiding heating up of components and stop changes to the internal resistance.

Moreover I will suck with large resistors, reducing draining. Lastly I will handbill the electromotive force before and after the experiment, to assure the precision of the cell. Method prototypical I will set up all Components (under Apparatus) enquire as shown on fig 1. In order for t! his investigation to be a fair test, I will recurrence forth the variables (shown above) to achieve an accurate investigation. aft(prenominal) building the lap covering (fig1) I will step the emf of the cell when the lick 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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