User:Rishabh gupta17/sandbox

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MY NOTE OF CLASS 10 CH-12   ELECTRICITY key notes         Rishabh.G                                                               PART{P}:-1 	ELECRICITY:-IT IS THE FORM OF ENERGY USED TO START ELECTRICAL APPLIANC.E. 	ELECRIC CURRENT:-RATE  FLoW OF CHARGE IS CALLED ELETRIC CURRENT.IT IS DENOTED BY “I”.AND ITS SI UNIT IS AMPERE. 	1AMPERE:-1COULOMB OF CHARGE PER UNIT SECOND. 	1AMPERE=1COLOUMB/1SECOND. 	1COULOUMB=6X1018   ELECTRONS. 	ELECRONS POCCESS:-1.6X10-199  C. 	ELETRIC CIRCUIT:-A CLOSED AND CONTINOUS PATH OF ELECTRIC CURRENT IS CALLED ELETRIC CIRCUIT. 	CONDUCTORS:-THE OBJECTS WHICH ALLOW ELECTRICITY TO PASS THROUGH THEM ARE CALLED COUNDUCTORS. EG:-ALUMINIUM,IRON. 	INSULATORS:-ThE OBJECTS WHICH Don’t ALOW ELECTICITY TO PASS THROUGH THEM ARE CALLED INSULATORS.EG:-COPPER. 	AMMETER:-IT IS AN INSTRUMENT USED TO MEASURE ELECTRIC CURRENT IN THE CIRUCIT. 	POTENTIAL DIFFERENCE:-WORKDONE TO MOVE A UNIT CHARGE FROM ONE POINT TO ANOTHER.IT IS DENTED BY {V}.SI UNIT IS VOLT. 	POTENTIAL DIFFERENCE{V}=WORK DONE/CHARGE. 	1VOLT:-IJOULE/1COULOUMB. 	ELECTRIC POTENTIAL:-ENERGY PER UNIT CARGE IS CALLED ELECTRIC POTENTIAL. 	VOLTMETER:-IT IS THE INSTRUMENT USED TO MEASURE POTETIAL DIFFERENCE ACROSS THE B/W WHICH THE POTENTIAL DIFFERENSE IS TO BE MEASURED. PART {2}

	OHM’S LAW:-IT STATES THAT POTENTIAL DIFFERENCE IS DIRECTLY PROPOTIONAL TO THE ELECTRIC CURRENT WHERE R IS CONTANT. 	POTENTIAL DIFFERENCE[V}=work done / charge. 	RESISTANCE:-IT IS THE PROPERTY OF A Conductor TO OBSTRUCT THE FLOW OF CURRENT.IT IS DENOTED BY {R}.ITS SI UNIT IS OHM. 	1OHM:-1VOLT/1AMPERE. 	VARIABLE RESISTANCE:-it IS A COMPONENT USED TO REGULATE CURRRENT WITHOUT CHANGING THE VOLTAGE SOURCE. 	RHEOSTAT:-IT IS USED TO CHANGE THE RESISTANCE IN THE CIRCUIT. 	FACTORS ON WHICH THE RESISTANCE OF THE CONDUCTO DEPENDS;- 	LENGTH OF THE COUNDUCTOR:-DIRECTLY 	AREA OF CROSS SECTON:-INVERSLY 	NATURE OF THE MATERIAL:-RESISTANCE OF THE CONDUCTOR DEPENDS ON THE NATURE OF THE  MATERIAL OF WHICH IT IS MADE. 	POWER:-THE RATE AT WHICH ELETRIC ENERGY IS CONSUMED BY AN ELECTRICAL APPLIANCe.IT IS DENOTED BY {P}.ITS SI UNIT IS WATT. P=VI 	1WATT=1VOLT/1AMPERE 	BIGGER UNIT OF POWER IS-          1KILOWATT{KW}=1000 	PRACTICAL UNIT OF POWER IS HORSE POWER.1HP=746W. 	COMMERCIALUNIT OF ENERGY IS KILOWATTHOUR.[KWH}=3.6X10J. 	HEATING EFFECT OF ELECTIC CURRENT:- production of heat in a conductor due to flow of  electric current.