Question

CH,
Observe the following table and answer the questions.
Material
Resistivity p(12-m) at 20°C
Silver
1.59 x 10-8
Copper
1.68 x 10-8
Gold
2.44 x 10-8
Aluminium
2.82 x 10-8
Calcium
3.36 x 10-8
Tungsten
5.60 x 10-8


Questions:
i) What is the resistivity of the material which is used to make
filament in the electric bulb ?
ii) Which is the best electric conductor in the above table ?




Plzz answer 1 nd 2 questions

Answer 1

Answer:

1. the resistivity of the material used for making the bulb is 5.6x10^-8
2. the best electric conductor is silver, it has least resistivity

Answer 2

Answer:

1) tungsten is used to make filament of bulb.

so resistivity is 5.60*10-8

2) the material whose resistivity is low is best electric conductor.

so silver is the best electric conductor.