Question
Identify the conductor having the lowest resistivity.
This question was previously asked in
RRB ALP 2018 CBT 2 Fitter Question Paper (21-Jan-2019) (Shift 3)
The correct answer is
Silver
Conductor Resistivity Comparison
Electrical resistivity (\( \rho \)) measures a material's opposition to electrical current flow. A lower resistivity signifies better conductivity.
The approximate resistivities of the given conductor materials at standard temperature (20°C) are:
| Conductor | Resistivity (\( \rho \)) in \( \Omega \cdot \text{m} \) |
| Silver | \( 1.59 \times 10^{-8} \) |
| Copper | \( 1.68 \times 10^{-8} \) |
| Aluminium | \( 2.65 \times 10^{-8} \) |
| Iron | \( 9.71 \times 10^{-8} \) |
Comparing these values, Silver has the smallest resistivity (\( 1.59 \times 10^{-8} \, \Omega \cdot \text{m} \)). Therefore, Silver is the conductor with the lowest resistivity among the choices.
Was this answer helpful?
Similar Questions
- The resistivity of a conductor depends on the _______.
- Identify the conductor having the highest resistivity.
- Identify the conductor having the lowest resistivity.
- Identify the conductor having the highest resistivity.
Important Questions from Resistivity of Various Materials
Which of the following graph correctly represents the variation of resistivity 's' with temperature 'T' for a semiconductor material ?
- The resistivity of a conductor depends on the _______.
The correct sequence of increasing order of electrical resistivity of the given material is-
- Identify the conductor having the highest resistivity.
- Identify the conductor having the lowest resistivity.
Need Expert Advice?
Upcoming Exams
Test Series
Railways
RRB ALP 2026 Mock Test series
1035 Tests 1 Tests Free
1082 Attempts
4.3(238)
English, Hindi
More Questions from RRB ALP
