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| Q. |
The cathode of a lead storage battery is made up of – |
| A. | Zinc |
| B. | Lead |
| C. | Lead oxide |
| D. | Manganese dioxide |
| Answer» B. Lead | |
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Explanation: Lead-acid batteries, invented in 1859 by French physicist Gaston Plante, are the oldest type of rechargeable battery. Despite having a very low energy-to-weight ratio and a low energy-to-volume ratio, their ability to supply high surge currents means that the cells maintain a relatively large power weight ratio. These features, along with their low cost, make them attractive for use in motor vehicles to provide the high current required by automobile starter motors. |
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