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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