IIT-JEE. Physics, Chemistry and Mathematics visit our website: www.rsnotes.in. NOTES ALSO AVAILABLE FOR – NTSE, BANKING, SSC, HCS and other competitive Exams. Chapter : 3. Current Electricity. Current Electricity.
Current Electricity. Science Notes. JC-Learn. 2 | Page. Current Electricity. An electric current is a flow of electric charge. If a battery is connected to each end of a conductor, the positive terminal will attract the free electrons of the conductor. At the other end, the negative terminal will replace the missing electrons. • The result
Download Physics Notes and Formulas for Class 12 Chapter 3 CURRENT ELECTRICITY - Download as PDF File (.pdf), Text File (.txt) or read online.
your body will pick up excess negative charges. If you touch a neutral door knob some of your excess negative charges moves to the door. • Door knob is an conductor, the charge flows quickly. The moving charge make a brief intense electric current between you and the door knob.
direction of flow of charge per unit time is called electric current. 3. Give the SI unit of What does the direction of electric current signify in an electric circuit? Ans. The .. Note: 1. As the temperature increases, relaxation time decreases. 2. Drift velocity depends upon 1) the nature of the conductor. 2) applied electric field.
genius. PHYSICS. Pradeep Kshetrapal. Current Electricity 1 genius PHYSICS. Notes by Pradeep Kshetrapal. R. R. R. R. R. R. R. R. R. R. R. R. O. Determination of resistance. V. E. + – vd. Electric current and Resistance. Heating effect of current. A. –. +. + –. +. –. Cell, Kirchoff's law and Measuring instruments
electric current. Let us now see what happens to such a piece of conductor if an electric field is applied. To focus our thoughts, imagine the conductor in the shape of a .. of a diode. Note the different scales for negative and positive values of the voltage and current. FIGURE 3.7 Variation of current versus voltage for GaAs.
The free electrons in a metal have three distinct velocities associated with them: (a) a random velocity ( about 105 ms-1). (b) a velocity with which electrical energy is transferred along the wire (about 108 ms-1). (c) a drift velocity of the electrons as a whole when a current flows through the wire. (this depends on the applied

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February 2018