A. increase
B. decrease
C. remain unchanged
D. any of the above
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Related Mcqs:
- At transition temperature the value of critical field is____________?
- A. zero B. negative real value C. positive real value D. complex value...
- The transition temperature of mercury is____________?
- A. 18.0°K B. 9.22°K C. 4.12°K D. 1.14’K...
- In a superconductor the value of critical density depends upon______________?
- A. magnetic field strength B. temperature C. either (A) or (B) D. both (A) and (B)...
- The metal having the lowest temperature coefficient of resistance is_________________?
- A. gold B. copper C. aluminium D. kanthal...
- Which of the following resistive materials has the lowest temperature co-efficient of resistance ?
- A. Nichrome B. Constantan C. Kanthal D. Molybdenum...
- The resistivity of a metal is a function of temperature because_____________?
- A. the amplitude of vibration of the atoms varies with temperature B. the electron density varies with temperature C. the electron gas density varies with temperature...
- Which of the following high resistance materials has the highest operating temperature ?
- A. Kanthal B. Manganin C. Nichrome D. Eureka...
- Substances whose specific resistance abruptly decreases at very low temperature are called___________?
- A. insulators B. conductors C. semiconductors D. superconductors...
- Constantan contains_______________?
- A. silver and tin B. copper and tungsten C. tungsten and silver D. copper and nickel...
- The impurity atoms is semiconductors_____________?
- A. inject more charge carriers B. reduce the energy gap C. increase the kinetic energy of valence electrons D. all of the above...
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