JEE Exam > JEE Questions > Which of the following statements is wrong?a)...
Start Learning for Free
Which of the following statements is wrong?
- a)Resistance of a semiconductor decreases on increasing the temperature
- b)Displacement of holes is opposite to the displacement of electrons in an electric field
- c)Resistance of a good conductor decreases on increasing the temperature
- d)n-type of semiconductor are neutral
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
Which of the following statements is wrong?a)Resistance of a semicondu...
Explanation:
The statement that is wrong is option 'C': Resistance of a good conductor decreases on increasing the temperature.
Why is this statement wrong?
The resistance of a conductor is dependent on its temperature. However, the relationship between resistance and temperature is different for different types of conductors.
For a good conductor, such as copper or aluminum, the resistance increases with an increase in temperature. This is because when the temperature of a conductor is increased, the atoms in the conductor vibrate more vigorously, which increases the frequency of collisions between the electrons and the atoms. This increased frequency of collisions leads to an increase in resistance.
On the other hand, for a semiconductor, the resistance decreases with an increase in temperature. This is because an increase in temperature increases the number of free electrons and holes in the semiconductor, which results in an increase in conductivity and a decrease in resistance.
Therefore, option 'C' is the wrong statement.
Other options explained:
a) Resistance of a semiconductor decreases on increasing the temperature: This statement is true for a semiconductor as explained above.
b) Displacement of holes is opposite to the displacement of electrons in an electric field: This is also a true statement. In a semiconductor, when an electric field is applied, the movement of electrons is in the direction of the field, while the movement of holes is in the opposite direction.
d) n-type of semiconductor are neutral: This statement is partially true. An n-type semiconductor has excess electrons, making it negatively charged overall. However, the charge of individual atoms in the semiconductor is still neutral.
The statement that is wrong is option 'C': Resistance of a good conductor decreases on increasing the temperature.
Why is this statement wrong?
The resistance of a conductor is dependent on its temperature. However, the relationship between resistance and temperature is different for different types of conductors.
For a good conductor, such as copper or aluminum, the resistance increases with an increase in temperature. This is because when the temperature of a conductor is increased, the atoms in the conductor vibrate more vigorously, which increases the frequency of collisions between the electrons and the atoms. This increased frequency of collisions leads to an increase in resistance.
On the other hand, for a semiconductor, the resistance decreases with an increase in temperature. This is because an increase in temperature increases the number of free electrons and holes in the semiconductor, which results in an increase in conductivity and a decrease in resistance.
Therefore, option 'C' is the wrong statement.
Other options explained:
a) Resistance of a semiconductor decreases on increasing the temperature: This statement is true for a semiconductor as explained above.
b) Displacement of holes is opposite to the displacement of electrons in an electric field: This is also a true statement. In a semiconductor, when an electric field is applied, the movement of electrons is in the direction of the field, while the movement of holes is in the opposite direction.
d) n-type of semiconductor are neutral: This statement is partially true. An n-type semiconductor has excess electrons, making it negatively charged overall. However, the charge of individual atoms in the semiconductor is still neutral.
Attention JEE Students!
To make sure you are not studying endlessly, EduRev has designed JEE study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in JEE.
|
Explore Courses for JEE exam
|
|
Similar JEE Doubts
Top Courses for JEEView all
Which of the following statements is wrong?a)Resistance of a semiconductor decreases on increasing the temperatureb)Displacement of holes is opposite to the displacement of electrons in an electric fieldc)Resistance of a good conductor decreases on increasing the temperatured)n-type of semiconductor are neutralCorrect answer is option 'C'. Can you explain this answer?
Question Description
Which of the following statements is wrong?a)Resistance of a semiconductor decreases on increasing the temperatureb)Displacement of holes is opposite to the displacement of electrons in an electric fieldc)Resistance of a good conductor decreases on increasing the temperatured)n-type of semiconductor are neutralCorrect answer is option 'C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Which of the following statements is wrong?a)Resistance of a semiconductor decreases on increasing the temperatureb)Displacement of holes is opposite to the displacement of electrons in an electric fieldc)Resistance of a good conductor decreases on increasing the temperatured)n-type of semiconductor are neutralCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is wrong?a)Resistance of a semiconductor decreases on increasing the temperatureb)Displacement of holes is opposite to the displacement of electrons in an electric fieldc)Resistance of a good conductor decreases on increasing the temperatured)n-type of semiconductor are neutralCorrect answer is option 'C'. Can you explain this answer?.
Which of the following statements is wrong?a)Resistance of a semiconductor decreases on increasing the temperatureb)Displacement of holes is opposite to the displacement of electrons in an electric fieldc)Resistance of a good conductor decreases on increasing the temperatured)n-type of semiconductor are neutralCorrect answer is option 'C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Which of the following statements is wrong?a)Resistance of a semiconductor decreases on increasing the temperatureb)Displacement of holes is opposite to the displacement of electrons in an electric fieldc)Resistance of a good conductor decreases on increasing the temperatured)n-type of semiconductor are neutralCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is wrong?a)Resistance of a semiconductor decreases on increasing the temperatureb)Displacement of holes is opposite to the displacement of electrons in an electric fieldc)Resistance of a good conductor decreases on increasing the temperatured)n-type of semiconductor are neutralCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Which of the following statements is wrong?a)Resistance of a semiconductor decreases on increasing the temperatureb)Displacement of holes is opposite to the displacement of electrons in an electric fieldc)Resistance of a good conductor decreases on increasing the temperatured)n-type of semiconductor are neutralCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
Here you can find the meaning of Which of the following statements is wrong?a)Resistance of a semiconductor decreases on increasing the temperatureb)Displacement of holes is opposite to the displacement of electrons in an electric fieldc)Resistance of a good conductor decreases on increasing the temperatured)n-type of semiconductor are neutralCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Which of the following statements is wrong?a)Resistance of a semiconductor decreases on increasing the temperatureb)Displacement of holes is opposite to the displacement of electrons in an electric fieldc)Resistance of a good conductor decreases on increasing the temperatured)n-type of semiconductor are neutralCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Which of the following statements is wrong?a)Resistance of a semiconductor decreases on increasing the temperatureb)Displacement of holes is opposite to the displacement of electrons in an electric fieldc)Resistance of a good conductor decreases on increasing the temperatured)n-type of semiconductor are neutralCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Which of the following statements is wrong?a)Resistance of a semiconductor decreases on increasing the temperatureb)Displacement of holes is opposite to the displacement of electrons in an electric fieldc)Resistance of a good conductor decreases on increasing the temperatured)n-type of semiconductor are neutralCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Which of the following statements is wrong?a)Resistance of a semiconductor decreases on increasing the temperatureb)Displacement of holes is opposite to the displacement of electrons in an electric fieldc)Resistance of a good conductor decreases on increasing the temperatured)n-type of semiconductor are neutralCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice JEE tests.
|
|
Explore Courses for JEE exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup