cell & battery

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Cell     : It consists of Two Electrodes

One Anode & One Cathode (made of diff materials)

Electrodes are Immersed in an Electrolyte

Chemical Reaction takes place

Produces 1V to 3 V

Battery: It consists of Two or More Cells

Cells are connected in Series – to increase to output Voltage

Produces 6 V / 12 V / 24 V  etc

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Primary Cell: When chemical gets used up – Discarded (non rechargeable)

Acid Cell       : (i) Zinc Carbon Dry Cell  Battery

eg: 1.5 V   Torch battery

Alkaline Cell: (i) Zn-MnO2 Cell (ii) Button Cell Silver Oxide Batteries

eg: Distress Beacons, Computers

Secondary Cell: When Chemical gets used up – Chemical is regenerated to original state (by recharging)

Re-Charging Current is fed in reverse direction – using “Battery Charging Equipment”

Acid Cell            :  Lead Acid Battery 

Anode – Pb          Cathode – PbO2        Electrolyte – H2SO4

1 cell produces 2 V

6 cells connected in series forms a 12 V battery

12 cells connected in series forms a 24 V battery

Alkaline Cell      : Nickel-Cadmium Battery

Anode – Ni (OH)2      Cathode – Cd        Electrolyte – KOH

1 cell produces 1.2 V

10 cells connected in series forms a 12 V battery

20 cells connected in series forms a 24 V battery

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