Notes of “Current and Resistance” for BSc written by Mr.Nasir Pervaiz Butt. These notes are very helpful to prepare Electricity & Magnetism for BSc and are in accordance with paper pattern of Punjab University-Lahore, GCU-Lahore, GCU-Faislabad, University of Sargodha-Sargodha and all other universities of Punjab and Pakistan.

Electric current is a flow of electric charge through a medium and electrical resistance of an electrical element is the opposition to the passage of an electric current through that element…

• Electric Current
• Current Density
• Relation b/w Current Density and Drift Velocity
• Resistance, Resistivity and Conductivity
• Relation b/w Conductivity and Current Density
• Microscopic and Macroscopic Quantaties
• Ohm's Law
• Analogy b/w Current and Heat Flow
• Microscopic View of Ohm's Law
• Energy Transfer in an Electric Circuit
• Semiconductors