Tungsten is used for filament of bulb due to high melting point and high resistance and electric power consumed appears as heat and light. electeic fuse made of tin lead alloy with low melting point and low resistance, melt as sudden hike of current and save electrical appliances. on which fact both cases can be explained?
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in order to avoid any short circuiting in the switch we apply low MP wire lead one while high MP is used in bulb so that it cannot melt even at very high temp and glow for longer period of time....
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