If a 100-watt electric bulb burns for 10 hours, it consumes 1 kilowatt hour (kWh) of electricity. Since electricity is sold at the rate of Rs 5 per unit, the cost of running the bulb for 10 hours will be ...
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Kilowatt hour (kWh) is a unit of electrical energy. It measures the amount of energy consumed or produced over time. One kilowatt hour represents the energy used by a device with a power rating of one kilowatt operating for one ...
Benjamin Franklin invented the lightning conductor in the 18th century. His invention provided a method to protect buildings and structures from lightning damage by safely directing the electrical discharge into the ground.
Lightning conductors are made of copper because it has excellent electrical conductivity and resistance to corrosion. Copper effectively channels the electrical discharge from lightning safely into the ground, protecting buildings and structures from damage.
The resistance of the filament is more than that of the wires. The filament glows because its high resistance causes it to heat up and emit light when current flows through it. In contrast, the wires have much lower resistance, ...
The non-metal that is not a poor conductor of electricity is selenium. Unlike other non-metals such as sulfur, bromine, and phosphorus, selenium has the ability to conduct electricity, especially in its crystalline form. This property makes selenium useful in various ...
Ammonium chloride acts as the primary electrolyte, while zinc chloride helps in enhancing the performance and shelf life of the battery. These electrolytes facilitate the flow of electrical charge within the battery, enabling it to function efficiently.
The electrolyte used in a car battery is sulfuric acid. Sulfuric acid is crucial for the chemical reactions that occur within the battery, allowing it to store and release electrical energy effectively. It interacts with the lead plates inside the ...
The dry cell is a primary cell. Primary cells are designed for single-use applications and cannot be recharged once depleted. They are commonly used in everyday items such as flashlights, remote controls, and portable electronics due to their convenience and ...
The coating of a zinc layer on iron is called galvanization. This process involves applying a protective zinc coating to iron or steel to prevent rusting and corrosion. Galvanization is widely used in various industries to extend the lifespan of ...