Finding the Internal Resistance of a Power Pack

Look for the internal resistance target design of the power supply and perform experiments to determine the EMF and internal resistance of a standard laboratory power supply. Theory This information was derived from the Collins Advanced Science Physics textbook, the Cambridge Advanced Science Physics 1 textbook and class notes. E.M.F or Electro Motive Force is the opposite of the potential difference, there; this is the case when the voltage increases the energy. This seems unlikely, but it is necessary to make the circuit function.

Required equipment: o Power pack o 5 wire o Voltmeter o Line length o Scale o Ammeter o Alligator Clip Circuit Diagram: Prediction: Equation V = 1 × R is a method of determining resistivity. Reschedule to R = V so that the temperature is kept constant or not functioning. So I predict that resistance will increase as wire length increases. So, if you double the length of the wire, I think resistance will double. METHODS: o Turn on the power pack by measuring the wire recovery device and setting the circuit

Science course wire resistance target: Please understand how wire length affects resistance. Knowledge: Ohm's law is a formula that shows the relationship between voltage, current, and resistance in a circuit. - Physics of semiconductor devices The purpose of this paper is to make Physics 100 students better understand the world of semiconductors. We will introduce operation of conductor, insulator, semiconductor, diode, transistor. The reason why it is important to understand these devices is that they have a big influence on our modern world.

Internal resistance survey We conduct the following investigation, the aim is to find the internal resistance of the lemon battery, I will make it myself. Variables that may affect my experiments are as follows: · Lemon size - I will experiment within an hour to allow me to use the same lemon to get all the results Size of the metal electrode - I use exactly the same experiment Center electrode - Any cable length - Use the same wire throughout the experiment. Once data is gathered, it will not break circuit resistance · Circuit - change this