Current Electricity | Important Questions - Part 1 | 2nd PUC Physics | In Kannada скачать в хорошем качестве

Current Electricity | Important Questions - Part 1 | 2nd PUC Physics | In Kannada

PDF link: https://bit.ly/y12-phy-ch3-current-el... 0:00 Introduction 0:17 What constitutes an electric current? 1:00 Current carriers in solid, liquid, and gas 3:02 SI unit of current 3:23 Electric current - Scalar or vector? 3:52 What does the direction of electric current signify in an electric circuit? 5:16 Define electric current. 6:31 Relation between coulomb and ampere. 07:31 Steady current and varying current 8:21 Net flow of electric charges in any direction inside the solid conductor 9:01 State Ohm’s law. 11:04 Define resistance 12:14 SI unit of resistance 13:14 Relation between resistance and resistivity 14:34 Resistivity of a conductor 16:04 How does the resistance of a conductor depend on length? 17:04 How does the resistance of a conductor depend on the area of cross-section of a conductor? 18:24 A wire of resistivity is stretched to three times its length. What will be its new resistivity? 19:34 SI unit of resistivity. 20:03 Change of resistance of an insulator with temperature 20:44 Change of resistance of a conductor with temperature 21:44 Change of resistance of a semiconductor with temperature 23:09 Name two materials whose resistivity decreases with the rise of temperature. 23:39 Name a material that exhibits a very weak dependence of resistivity with temperature. 25:02 Define electrical conductance. 25:42 SI unit of conductance.