{"id":11204,"date":"2022-11-19T15:30:01","date_gmt":"2022-11-19T10:00:01","guid":{"rendered":"https:\/\/www.aplustopper.com\/?p=11204"},"modified":"2022-11-19T15:43:54","modified_gmt":"2022-11-19T10:13:54","slug":"relationship-electric-current-potential-difference","status":"publish","type":"post","link":"https:\/\/www.aplustopper.com\/relationship-electric-current-potential-difference\/","title":{"rendered":"What is the Relationship between Electric Current and Potential Difference?"},"content":{"rendered":"
People also ask<\/strong><\/p>\n Aim:<\/strong> To investigate the relationship between current and potential difference for a metal wire. <\/p>\n Results:<\/strong><\/p>\n Discussion:<\/strong><\/p>\n Conclusion:<\/strong> What is the Relationship between Electric Current and Potential Difference? When an electric charge is placed at a point in an electric field, it experiences an electric force acting on it. Work is required to move the electric charge in the electric field against this force. This charge is said to have an electric potential […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[404],"tags":[406,4108,4109,4107],"yoast_head":"\n\n
Relationship between Electric Current and Potential Difference Problems with Solutions<\/strong><\/h2>\n
\n
\nSolution:
\n
\n<\/strong><\/li>\n
\n(a) How much work is done to drive the charges through the bulb?
\n(b) What is the current that flows in the circuit in 20 minutes?
\nSolution:
\n
\n<\/strong><\/li>\n<\/ol>\nRelationship between Potential Difference and Current E<\/strong>xperiment<\/strong><\/h2>\n
\nProblem:<\/strong> When a current passes through a conductor such as a metal wire, bulb and diode, electrical energy is converted into heat energy causing a potential difference across the conductor. What is the relationship between potential difference across a conductor and the current that passes through it?
\nHypothesis:<\/strong> When the current that passes through a metal wire increases, the potential difference across the metal wire increases.
\nVariables:<\/strong>
\n(a) Manipulated variable: Current, I
\n(b) Responding variable: Potential difference, V
\n(c) Fixed variable: Length and type of metal wire
\nMaterials:<\/strong> 50 cm constantan wire (s.w.g. 24)
\nApparatus:<\/strong> Ammeter (0 – 1 A), voltmeter (0 – 5 V), battery holder, three 1.5 V batteries, rheostat, switch, connecting wires
\nMethod:<\/strong><\/p>\n\n
\n
\n<\/li>\n
\n<\/li>\n<\/ol>\n\n
\n(a) All wire connections must be tightly fixed and the length of the wire should not be too long.
\n(b) The zero error of the ammeter and voltmeter must be checked and adjusted.
\n(c) While taking the readings off the meters, make sure that the pointer is always vertically above its image in the mirror to avoid parallax error.
\n(d) The switch must always be turned off when not taking any reading. This is to ensure that the temperature of the conductor is kept constant throughout the experiment.<\/li>\n<\/ol>\n
\nThe potential difference, V across a conductor increases when the current, I passing through it increases as long as the conductor is kept at a constant-temperature. The hypothesis is accepted.<\/p>\n","protected":false},"excerpt":{"rendered":"