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Work Education PROJECT CLASS VII - electro science club

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Work Education PROJECT CLASS VII - electro science club Powered By Docstoc
					Work Education PROJECT
       class : vii

   TOPIC=CELL AND BATTERY
  SUBMITTED TO=SANJAY SIR
SUBMITTED BY=RAHUL JAISWAL
                 CELLS

  CELL:THE CELL IS A DEVICE WHICH CONVERT
      CHEMICAL ENERGY INTO ELECTRICAL
 ENERGY,AND CELLS ARE SOURCE OF ELECTRIAL
 ENERGY.THE CELL HAS STORED OR POTENTIAL
  FROM OF ENERGY.DUE TO THE PROPERTY OF
  STORING OF ENERGY THE CELLS ARE USED AS
EMERGENCY ELECTRIC SUPPLY SOURCE AS WELL
AS ELECTRIC SUPPLY SOURCE IN REMOTE AREAS.
ADVANTAGES OF
    CELLS
  (i) CELL PROVIDES MOVEBILITY TO THE
        ELECTRIAL AND IT IS A PORTABLE
                   DEVICE.
(ii)CELL CAN STORED ELECTRICAL ENERGY
       WHEN WE REQUIRED IT SUPPLY AS
       ELECTRICAL ENERGY LIKE:TORCHES
                     ETC.
  (iii)CELLS ARE CARRIBLE,HENCE CAN BE
      EFFECTIVELY USE IN REMOTE AREAS.
    COMBINATION OF CELLS:

 BATTERY:THE COMBITION OF TWO OR
      MORE CELLS IS KNOWN AS
“BATTERY”.THIS COMBITION CAN BE OF
 TWO FROMS:(i)SERIES COMBINATION
                 AND
     (ii)PARALLEL COMBINATION.
   SERIES
COMBINATION
    THE COMBINATION OF CELL IN WHICH THE
POSITIVE TERMINAL OF ONE CELL GETS CONNECTED
      WITH THE NEGATIVE OF NEXT CELL,THIS
 COMBITION FROMS A CHAIN TYPE STRUCTURE .IN
THIS COMBINATION THE TOTAL VOLTAGE IS TAKEN
 OR CALCULATED ACROSS FAR TERMINAL OF CELL 1
     AND FAR TERMINAL OF LAST CELL.IN THIS
 COMBINATION THE OUTPUT VOLTAGE INCREACES
     WITH NUMBERS OF CELLS ADDED TO THE
 COMBINATION.THE FORMULAOF TOTAL OUTPUT
          VOLTAGE:VTOTAL=V1+V2+…..
  PARALLEL
COMBINATION
 IN PARALLEL COMBINATION THE
 POSITIVE TERMINAL OF ONE CELL
 GETS CONNECTED WITH POSITIVE
  TERMINAL OF NEXT CELL AND
SIMILAR HAPPENS WITH NEGATIVE
            TERMINAL
THANKS
CELLS AND BATTERY

				
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posted:7/3/2013
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