A.S. Physics Investigations

A.S. Physics Investigations Aim The aim of the investigating is to find off the potential and internal resistance of a cell. Apparatus Resistors (values: 10?,20,30?,39?,51?,62?,68?,82?,91?,100?) Connecting outfits Multimeters, measuring stream and Voltage Cell Crocodile Clips Circuit diagram [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 victimisation overheating, given that the resist departure through it causes it to heat up and may maybe be very dangerous. In order to prevent this, I pass on be leaving 10s in amongst readings allowing components to cool down. Variables I go away be ever-changing the shipment underground, present-day(prenominal), final stage p.d and temperature. Since mending the load resistor will study an effect on the p.d and current, furthermore the temperatu re 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 electric potential and current. In addition I will be act off the cell between readings for 10s, avoiding heating up of components and halt changes to the internal resistance.

Moreover I will suck with large resistors, reducing draining. Lastly I will handbill the emf before and after the experiment, to assure the precision of the cell. Method prototypal I will set up all Components (under Apparatus) c onvey as shown on fig 1. In order for this i! nvestigation to be a fair test, I will swerve forth the variables (shown above) to achieve an accurate investigation. by and by building the lot (fig1) I will step the emf of the cell when the lot 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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