. Explain the following. a. Why is the tungsten used almost exclusively for filament of electric lamps? b. Why are the conductors of electric heating devices, such as bread-toasters and electric irons, made of an alloy rather than a pure metal? c. Why is the series arrangement not used for domestic circuits? d. How does the resistance of a wire vary with its area of cross-section? e. Why copper and aluminium wires are usually employed for electricity transmission?
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The tomb of Sher Shah Suri is in the Sasaram town of Bihar state, India. The tomb was built in memory of Emperor Sher Shah Suri, a Pathan from Bihar who defeated the Mughal Empire and founded the Suri Empire in northern India. He died in an accidental gunpowder explosion in the fort of Kalinjar on 13 May
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