Plot the I vs V graph for Ohm's law. Also find the conductance of the material from the graph. If
the length of a wire is elongated by 20% , find the percentage change in the resistance of it.
Write the desired feature of a material such that it can be used as filament in a bulb
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Tungsten metal is selected for making filaments of lamp bulbs because tungsten can sustain high temperatures and it has high melting point, combined with the fact that it also has high resistivity. They do not oxidize easily at high temperatures.
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