Class 12 Exam > Class 12 Questions > Directions : In the following questions, A s...
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Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion (A): Meter bridge wire is generally made of Constantan.
Reason (R): Constantan has a very low temperature coefficient of resistance.
- a)Both A and R are true and R is the correct explanation of A
- b)Both A and R are true but R is NOT the correct explanation of A
- c)A is true but R is false
- d)A is false and R is true
Correct answer is option 'A'. Can you explain this answer?
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Directions : In the following questions, A statement of Assertion (A)...
Assertion: Meter bridge wire is generally made of Constantan.
Reason: Constantan has a very low temperature coefficient of resistance.
The correct answer is option A, which means both the assertion and the reason are true, and the reason is the correct explanation of the assertion.
Explanation:
- The meter bridge is a device used to measure unknown electrical resistances. It consists of a uniform wire, known as a meter bridge wire, which is made of a material with a low temperature coefficient of resistance.
Constantan:
- Constantan is an alloy of copper and nickel, which is commonly used as the material for the meter bridge wire.
- It has a very low temperature coefficient of resistance, meaning that its resistance does not change significantly with temperature variations.
- This property makes Constantan suitable for use in the meter bridge because any change in resistance due to temperature fluctuations would affect the accuracy of the measurements.
Low Temperature Coefficient of Resistance:
- The temperature coefficient of resistance (TCR) is a measure of how much the resistance of a material changes with temperature.
- Materials with a low TCR have a stable resistance over a wide range of temperatures.
- Constantan has a very low TCR, which means its resistance remains nearly constant even with temperature changes.
- This property makes it ideal for applications such as the meter bridge, where accurate resistance measurements are required.
Conclusion:
- The assertion that the meter bridge wire is generally made of Constantan is true.
- The reason for this is that Constantan has a very low temperature coefficient of resistance, ensuring the accuracy of resistance measurements even with temperature variations.
- Therefore, both the assertion and the reason are true, and the reason is the correct explanation of the assertion.
Reason: Constantan has a very low temperature coefficient of resistance.
The correct answer is option A, which means both the assertion and the reason are true, and the reason is the correct explanation of the assertion.
Explanation:
- The meter bridge is a device used to measure unknown electrical resistances. It consists of a uniform wire, known as a meter bridge wire, which is made of a material with a low temperature coefficient of resistance.
Constantan:
- Constantan is an alloy of copper and nickel, which is commonly used as the material for the meter bridge wire.
- It has a very low temperature coefficient of resistance, meaning that its resistance does not change significantly with temperature variations.
- This property makes Constantan suitable for use in the meter bridge because any change in resistance due to temperature fluctuations would affect the accuracy of the measurements.
Low Temperature Coefficient of Resistance:
- The temperature coefficient of resistance (TCR) is a measure of how much the resistance of a material changes with temperature.
- Materials with a low TCR have a stable resistance over a wide range of temperatures.
- Constantan has a very low TCR, which means its resistance remains nearly constant even with temperature changes.
- This property makes it ideal for applications such as the meter bridge, where accurate resistance measurements are required.
Conclusion:
- The assertion that the meter bridge wire is generally made of Constantan is true.
- The reason for this is that Constantan has a very low temperature coefficient of resistance, ensuring the accuracy of resistance measurements even with temperature variations.
- Therefore, both the assertion and the reason are true, and the reason is the correct explanation of the assertion.
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Directions : In the following questions, A statement of Assertion (A)...
Meter bridge wire is generally made of Constantan. The assertion is true. Temperature coefficient of resistance of Constantan is very low. So, its resistance variation is negligible even after long use. This is the requirement of an ideal meter bridge. So the reason is true and properly explains the assertion.
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Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Meter bridge wire is generally made of Constantan.Reason (R): Constantan has a very low temperature coefficient of resistance.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer?
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Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Meter bridge wire is generally made of Constantan.Reason (R): Constantan has a very low temperature coefficient of resistance.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Meter bridge wire is generally made of Constantan.Reason (R): Constantan has a very low temperature coefficient of resistance.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Meter bridge wire is generally made of Constantan.Reason (R): Constantan has a very low temperature coefficient of resistance.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer?.
Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Meter bridge wire is generally made of Constantan.Reason (R): Constantan has a very low temperature coefficient of resistance.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Meter bridge wire is generally made of Constantan.Reason (R): Constantan has a very low temperature coefficient of resistance.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Meter bridge wire is generally made of Constantan.Reason (R): Constantan has a very low temperature coefficient of resistance.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Meter bridge wire is generally made of Constantan.Reason (R): Constantan has a very low temperature coefficient of resistance.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
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Here you can find the meaning of Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Meter bridge wire is generally made of Constantan.Reason (R): Constantan has a very low temperature coefficient of resistance.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Meter bridge wire is generally made of Constantan.Reason (R): Constantan has a very low temperature coefficient of resistance.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Meter bridge wire is generally made of Constantan.Reason (R): Constantan has a very low temperature coefficient of resistance.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Meter bridge wire is generally made of Constantan.Reason (R): Constantan has a very low temperature coefficient of resistance.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Meter bridge wire is generally made of Constantan.Reason (R): Constantan has a very low temperature coefficient of resistance.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 12 tests.
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