Verified Solution • 2025–26 Session
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QJEEM25Ph1d05: JEE Main 2025 Physics - Class 11 JEEM25Ph1d05 Solution: The difference of temperature in a material can convert heat…
The difference of temperature in a material can convert heat energy into electrical energy. To harvest the heat energy, the material should have
Multiple Choice Options
- A low thermal conductivity and high electrical conductivity
- B low thermal conductivity and low electrical conductivity
- C high thermal conductivity and high electrical conductivity
- D high thermal conductivity and low electrical conductivity
Step-by-Step Verified Solution
To harvest heat energy by converting a temperature difference into electrical energy, a material should have low thermal conductivity and high electrical conductivity. These materials are called thermoelectric materials.
The material should not readily transfer heat, allowing a significant temperature difference to be maintained between the hot and cold sides. So low thermal conductivity is necessary. High electrical conductivity is needed to allow the efficient movement of electrons when a temperature difference is present.
Hence, option 1 is correct.