MHT CET 2025 Physics question
Not in JEE Advanced syllabus
A piece of semiconductor is connected in series in an electric circuit. On increasing the temperature, the current in the circuit will
Answer: (C)
Solution
A semiconductor has a negative temperature coefficient of resistance. On heating, more covalent bonds break, so the number of free electrons and holes (charge carriers) rises rapidly, which outweighs the increased lattice vibrations. Its resistance therefore decreases, and
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