Voltage and Current Source foe Circuits and Networks

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1. VOLTAGE and CURRENT Source BY Ketan Nayak -140413117005 Nirmalsinh Gohil-140413117003

2. INDEX INTRODUCTION CURRENT VOLTAGE Energy Sources Voltage Source -Different Voltage Source - Facts About Voltage Source Current Source

3. Current and Voltage Relation (OHM’s Law) Resistors Laws of Current Laws of Voltage

4. Introduction Current and Voltage Source is the Basic Components of the Electronic Circuit. Current and Voltage is Most Essential Factor for the Operation of any Circuit. Before Knowing about the Current and Voltage Source we must know about the Voltage and Current.

5. CURRENT Current is Defined as the Flow of the Electric Charge.. Current is Basically Denoted by Symbol I . The Unit for the Current is A or ampere. SI Unit of Current is Coulomb/Second Measuring Element used for Current is Ammeter.

6. VOLTAGE Voltage is a Potential Difference between Two Points of an Electrical Field. It is Denoted by Symbol V The Unit for Measurement of Voltage is Volts . SI Unit for Voltage is Joule/Coulomb Measuring Element for Voltage is Voltmeter.

7. Energy Sources According to the Terminal Voltage-Current Characteristics, Electrical energy Sources are Categorized into two Parts. Voltage Source Current Source

8. VOLTAGE SOURCE The Voltage Source is a Two Terminal Element in which the Voltage is completely independent of the Current. The Representation of Voltage Source is Done by the Fig Shown Above.

9. Different Voltage Sources

10. Facts about Voltage Source A Voltage source produces an E lectromotive F orce ( e.m.f . ) which causes a current to flow within a circuit U nit of e.m.f . is the volt a volt is the potential difference between two points when a joule of energy is used to move one coulomb of charge from one point to the other Real voltage sources, such as batteries have resistance associated with them In analysing circuits we use I deal V oltage sources we also use controlled or dependent Voltage sources

11. Current Source We also sometimes use the concept of an I deal C urrent Source Unrealizable, but useful in circuit analysis can be a fixed current source, or a C ontrolled or D ependent current source W hile an ideal voltage source has zero output resistance, an ideal current source has infinite output resistance.

12. OHM’s Law The Relationship between Voltage and Current is Given by OHM’s Law. Constant of Proportionality is Resistance R Hence C urrent through a Resistor causes power dissipation

13. Resistors The Components used to Oppose the Flow of Current through it is Called Resistor . And the Property of a Material to Oppose Current is called Resistance .

14. Law of Current At any instant, the algebraic sum of all the currents flowing into any node in a circuit is zero I f currents flowing into the node are positive, currents flowing out of the node are negative, then

15. Law of Voltage At any instant the algebraic sum of all the voltages around any loop in a circuit is zero I f clockwise voltage arrows are positive and anticlockwise arrows are negative then

16. Thank You