{"product_id":"to-determine-resistance-per-cm-of-a-given-wire-by-plotting-a-graph-for-potential-difference-vs-current","title":"To determine resistance per cm of a given wire by plotting a graph for potential difference Vs. current.","description":"\u003cp\u003eAPPARATUS WE SUPPLIED \u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eBattery Eliminator (0-12V) \u003c\/li\u003e\n\u003cli\u003eVoltmeter 3V\u003c\/li\u003e\n\u003cli\u003eAmmeter (0-1A)\u003c\/li\u003e\n\u003cli\u003eA piece of wire of known length \u003c\/li\u003e\n\u003cli\u003eRheostat (50ohm, 1.6A)\u003c\/li\u003e\n\u003cli\u003eOne way key  \u003c\/li\u003e\n\u003cli\u003eDCC wire                                                                                                                      \n\u003cp\u003eAccording to Ohm’s law, the electric current flowing through a conductor is directly proportional to the potential difference across its ends, provided the physical state (pressure, temperature, and dimensions) of the conductor remains unchanged.\u003c\/p\u003e\n\u003cp\u003eIf \u003cem\u003eI\u003c\/em\u003e is the current flowing through the conductor and\u003cem\u003e V\u003c\/em\u003e is the potential difference across its end, then\u003c\/p\u003e\n\u003cdiv class=\"mathjax-scroll\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cem\u003eV\u003c\/em\u003e = \u003cem\u003eRI\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eWhere \u003cem\u003eR\u003c\/em\u003e is the constant of proportionality and is termed as the electrical resistance of the conductor. Resistance \u003cem\u003eR\u003c\/em\u003e depends on the dimensions and material of the conductor. The relationship between the resistance of a material and its length and area of the cross-section is given by the formula\u003c\/p\u003e\n\u003cdiv class=\"mathjax-scroll\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eWhere ρ is the specific resistance or resistivity and is a characteristic of the material of th\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"scientifickart","offers":[{"title":"Default Title","offer_id":52002893201714,"sku":null,"price":3430.0,"currency_code":"INR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/6561\/2338\/files\/apparatususedinresistanceperunit.png?v=1789998150","url":"https:\/\/scientifickart.com\/products\/to-determine-resistance-per-cm-of-a-given-wire-by-plotting-a-graph-for-potential-difference-vs-current","provider":"scientifickart","version":"1.0","type":"link"}