Question
Download Solution PDFWhat do you call a component of identical size that offers a higher resistance to electricity?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Poor conductor.Key Points
- A poor conductor call a component of identical size that offers higher resistance to electricity
- A material with high resistivity which means it has got high resistance and will resist the flow of electrons is called insulating material.
Additional Information
- Resistivity is the resistance per unit length and cross-sectional area.
- It is the property of the material that opposes the flow of charge or the flow of electric current.
- The unit of resistivity is an ohm meter.
- A material with very low resistivity means it has very low resistance and thus the electrons will flow smoothly through the material called conducting material.
Important Points
- Electrical resistivity of some substances at 20°C.
|
|
Material |
Resistivity (Ω m) |
|
Conductors
|
Silver |
1.60 × 10–8 |
|
Tungsten |
5.20 × 10–8 |
|
|
Iron |
10.0 × 10–8 |
|
|
Manganese |
1.84 × 10–6 |
|
|
Alloy |
Nichrome (an alloy of Ni, Cr, Mn and Fe) |
100 × 10–6 |
|
Insulators
|
Glass |
1010 - 1014 |
|
Diamond |
1012 - 1013 |
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