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Can you explain the answer of this question below:
A piece of Aluminium and Germanium each are cooled from T1 k to T2 k. The resistance of
- A:Each of them decreases
- B:Each of them increases
- C:Aluminum is a metal and germanium is semiconductor
- D:Aluminium decreases and that of Germanium increases
The answer is c.
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Most Upvoted Answer
Can you explain the answer of this question below:A piece of Aluminium...
Resistance is dependent on temperature as R = r(1 + aT) where T = change in temperature and r = initial resistanceIn case of metals as temperature increases the vibration of molecules increases with results in more molecules colliding and increasing the resistance of metal but in case of semiconductor resistance decreases with increase in temperature since their temperature coefficient of resistance, a is less than zero.Since aluminium is a metal it's resistance decreases with decrease in temperature and on the other hand germanium being a semiconductor it's resistance increases with decrease in temperature.
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Community Answer
Can you explain the answer of this question below:A piece of Aluminium...
Explanation:
The resistance of a material is directly proportional to its temperature. Therefore, when a material is cooled down, its resistance decreases.
However, the rate at which resistance decreases with temperature is different for different materials. This is because the resistance of a material depends on its crystal structure, the number of free electrons, and other factors.
Aluminium:
Aluminium is a metal and has a simple crystal structure. The number of free electrons in aluminium is high, and it has a low resistivity. Therefore, when aluminium is cooled down, its resistance decreases.
Germanium:
Germanium is a semiconductor and has a more complex crystal structure than aluminium. The number of free electrons in germanium is less than aluminium, and it has a higher resistivity. Therefore, when germanium is cooled down, its resistance increases.
Conclusion:
In conclusion, the resistance of aluminium decreases when it is cooled down, while the resistance of germanium increases. Therefore, option 'C' is the correct answer.
The resistance of a material is directly proportional to its temperature. Therefore, when a material is cooled down, its resistance decreases.
However, the rate at which resistance decreases with temperature is different for different materials. This is because the resistance of a material depends on its crystal structure, the number of free electrons, and other factors.
Aluminium:
Aluminium is a metal and has a simple crystal structure. The number of free electrons in aluminium is high, and it has a low resistivity. Therefore, when aluminium is cooled down, its resistance decreases.
Germanium:
Germanium is a semiconductor and has a more complex crystal structure than aluminium. The number of free electrons in germanium is less than aluminium, and it has a higher resistivity. Therefore, when germanium is cooled down, its resistance increases.
Conclusion:
In conclusion, the resistance of aluminium decreases when it is cooled down, while the resistance of germanium increases. Therefore, option 'C' is the correct answer.
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Can you explain the answer of this question below:A piece of Aluminium and Germanium each are cooled from T1 k to T2 k. The resistance ofA:Each of them decreasesB:Each of them increasesC:Aluminum is a metal and germanium is semiconductorD:Aluminium decreases and that of Germanium increasesThe answer is c.
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Can you explain the answer of this question below:A piece of Aluminium and Germanium each are cooled from T1 k to T2 k. The resistance ofA:Each of them decreasesB:Each of them increasesC:Aluminum is a metal and germanium is semiconductorD:Aluminium decreases and that of Germanium increasesThe answer is c. for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Can you explain the answer of this question below:A piece of Aluminium and Germanium each are cooled from T1 k to T2 k. The resistance ofA:Each of them decreasesB:Each of them increasesC:Aluminum is a metal and germanium is semiconductorD:Aluminium decreases and that of Germanium increasesThe answer is c. covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Can you explain the answer of this question below:A piece of Aluminium and Germanium each are cooled from T1 k to T2 k. The resistance ofA:Each of them decreasesB:Each of them increasesC:Aluminum is a metal and germanium is semiconductorD:Aluminium decreases and that of Germanium increasesThe answer is c..
Can you explain the answer of this question below:A piece of Aluminium and Germanium each are cooled from T1 k to T2 k. The resistance ofA:Each of them decreasesB:Each of them increasesC:Aluminum is a metal and germanium is semiconductorD:Aluminium decreases and that of Germanium increasesThe answer is c. for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Can you explain the answer of this question below:A piece of Aluminium and Germanium each are cooled from T1 k to T2 k. The resistance ofA:Each of them decreasesB:Each of them increasesC:Aluminum is a metal and germanium is semiconductorD:Aluminium decreases and that of Germanium increasesThe answer is c. covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Can you explain the answer of this question below:A piece of Aluminium and Germanium each are cooled from T1 k to T2 k. The resistance ofA:Each of them decreasesB:Each of them increasesC:Aluminum is a metal and germanium is semiconductorD:Aluminium decreases and that of Germanium increasesThe answer is c..
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