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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Current is passed through a metallic wire heating it red. When cold water is poured on half of its portion, the rest of half portion becomes more hot.
Reason(R): Resistance decreases due to decrease in temperature and then current through wire increases.
Assertion(A): Current is passed through a metallic wire heating it red. When cold water is poured on half of its portion, the rest of half portion becomes more hot.
Reason(R): Resistance decreases due to decrease in temperature and then current through wire increases.
- a)Both Assertion and Reason are true and Reason is the correct explanation of assertion.
- b)Both Assertion and Reason are true and Reason is not the correct explanation of assertion
- c)Assertion is true but Reason is false.
- d)Assertion is false but Reason is true.
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
In the following question, a Statement of Assertion (A) is given follo...
Understanding the Assertion and Reason
The question involves understanding the relationship between current, temperature, and resistance in a metallic wire.
Assertion (A)
- Current passes through a metallic wire, causing it to heat up to a red temperature.
- When cold water is poured on one half of the wire, the remaining half becomes even hotter.
Reason (R)
- The reason given states that resistance decreases when the temperature drops due to cooling from the cold water.
- This decrease in resistance leads to an increase in current flowing through the wire.
Analysis of the Statements
- Assertion Validation:
- When a current flows through a wire, it heats due to Joule heating. Pouring cold water on half cools that portion, while the other half still experiences increased temperature due to the continuous flow of current.
- Reason Validation:
- Resistance in a metallic conductor typically decreases with a decrease in temperature, which would lead to an increase in current through that portion of the wire. However, in this scenario, the other half is still heating up due to the ongoing current, which supports the assertion.
Conclusion
Both the assertion and reason are true. The reason correctly explains the phenomenon observed in the assertion.
Thus, the correct answer is:
Option A: Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
The question involves understanding the relationship between current, temperature, and resistance in a metallic wire.
Assertion (A)
- Current passes through a metallic wire, causing it to heat up to a red temperature.
- When cold water is poured on one half of the wire, the remaining half becomes even hotter.
Reason (R)
- The reason given states that resistance decreases when the temperature drops due to cooling from the cold water.
- This decrease in resistance leads to an increase in current flowing through the wire.
Analysis of the Statements
- Assertion Validation:
- When a current flows through a wire, it heats due to Joule heating. Pouring cold water on half cools that portion, while the other half still experiences increased temperature due to the continuous flow of current.
- Reason Validation:
- Resistance in a metallic conductor typically decreases with a decrease in temperature, which would lead to an increase in current through that portion of the wire. However, in this scenario, the other half is still heating up due to the ongoing current, which supports the assertion.
Conclusion
Both the assertion and reason are true. The reason correctly explains the phenomenon observed in the assertion.
Thus, the correct answer is:
Option A: Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer- Assertion(A): Current is passed through a metallic wire heating it red. When cold water is poured on half of its portion, the rest of half portion becomes more hot.Reason(R): Resistance decreases due to decrease in temperature and then current through wire increases.a)Both Assertion and Reason are true and Reason is the correct explanation of assertion.b)Both Assertion and Reason are true and Reason is not the correct explanation of assertionc)Assertion is true but Reason is false.d)Assertion is false but Reason is true.Correct answer is option 'A'. Can you explain this answer?
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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer- Assertion(A): Current is passed through a metallic wire heating it red. When cold water is poured on half of its portion, the rest of half portion becomes more hot.Reason(R): Resistance decreases due to decrease in temperature and then current through wire increases.a)Both Assertion and Reason are true and Reason is the correct explanation of assertion.b)Both Assertion and Reason are true and Reason is not the correct explanation of assertionc)Assertion is true but Reason is false.d)Assertion is false but Reason is true.Correct answer is option 'A'. 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 In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer- Assertion(A): Current is passed through a metallic wire heating it red. When cold water is poured on half of its portion, the rest of half portion becomes more hot.Reason(R): Resistance decreases due to decrease in temperature and then current through wire increases.a)Both Assertion and Reason are true and Reason is the correct explanation of assertion.b)Both Assertion and Reason are true and Reason is not the correct explanation of assertionc)Assertion is true but Reason is false.d)Assertion is false but Reason is true.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer- Assertion(A): Current is passed through a metallic wire heating it red. When cold water is poured on half of its portion, the rest of half portion becomes more hot.Reason(R): Resistance decreases due to decrease in temperature and then current through wire increases.a)Both Assertion and Reason are true and Reason is the correct explanation of assertion.b)Both Assertion and Reason are true and Reason is not the correct explanation of assertionc)Assertion is true but Reason is false.d)Assertion is false but Reason is true.Correct answer is option 'A'. Can you explain this answer?.
In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer- Assertion(A): Current is passed through a metallic wire heating it red. When cold water is poured on half of its portion, the rest of half portion becomes more hot.Reason(R): Resistance decreases due to decrease in temperature and then current through wire increases.a)Both Assertion and Reason are true and Reason is the correct explanation of assertion.b)Both Assertion and Reason are true and Reason is not the correct explanation of assertionc)Assertion is true but Reason is false.d)Assertion is false but Reason is true.Correct answer is option 'A'. 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 In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer- Assertion(A): Current is passed through a metallic wire heating it red. When cold water is poured on half of its portion, the rest of half portion becomes more hot.Reason(R): Resistance decreases due to decrease in temperature and then current through wire increases.a)Both Assertion and Reason are true and Reason is the correct explanation of assertion.b)Both Assertion and Reason are true and Reason is not the correct explanation of assertionc)Assertion is true but Reason is false.d)Assertion is false but Reason is true.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer- Assertion(A): Current is passed through a metallic wire heating it red. When cold water is poured on half of its portion, the rest of half portion becomes more hot.Reason(R): Resistance decreases due to decrease in temperature and then current through wire increases.a)Both Assertion and Reason are true and Reason is the correct explanation of assertion.b)Both Assertion and Reason are true and Reason is not the correct explanation of assertionc)Assertion is true but Reason is false.d)Assertion is false but Reason is true.Correct answer is option 'A'. Can you explain this answer?.
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