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Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.
Assertion: To convert a galvanometer into an ammeter a small resistance is connected in parallel with it.
Reason: The small resistance increases the combined resistance of the combination.
- a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
- b)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
- c)If the Assertion is correct but Reason is incorrect.
- d)If both the Assertion and Reason are incorrect.
Correct answer is option 'C'. Can you explain this answer?
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Directions: These questions consist of two statements, each printed a...
A galvanometer can be converted into an ammeter by connecting a low resistance (called shunt resistance) in parallel to the galvanometer. Parallel resistance being small will draw most of the current and the combination will not effect the original current in the circuit.
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Directions: These questions consist of two statements, each printed a...
Assertion: To convert a galvanometer into an ammeter, a small resistance is connected in parallel with it.
Reason: The small resistance increases the combined resistance of the combination.
Explanation:
The Assertion states that to convert a galvanometer into an ammeter, a small resistance is connected in parallel with it. This means that when we want to measure larger currents using a galvanometer, we add a small resistance in parallel to the galvanometer. Let's understand why this is necessary.
- Galvanometer: A galvanometer is a sensitive instrument used to detect and measure small electric currents. It is based on the principle of the magnetic effect of electric currents.
- Ammeter: An ammeter is an instrument used to measure the flow of electric current in a circuit. It is designed to have low resistance and is connected in series with the circuit.
Reason: The small resistance increases the combined resistance of the combination.
- When a small resistance is connected in parallel with the galvanometer, it creates an additional path for the current to flow.
- In a parallel combination, the total resistance decreases as compared to an individual component. This is because the overall resistance is inversely proportional to the sum of the reciprocals of the individual resistances. So, as the resistance of the parallel branch is small, the combined resistance decreases.
- As the combined resistance decreases, more current can flow through the combination, and the galvanometer can measure larger currents accurately.
Explanation of Correct Answer:
The correct answer is option 'c' - If the Assertion is correct but the Reason is incorrect.
- The Assertion is correct because connecting a small resistance in parallel with a galvanometer is a common method to convert it into an ammeter.
- However, the Reason is incorrect because connecting a small resistance in parallel does not increase the combined resistance of the combination. Instead, it decreases the overall resistance, allowing the galvanometer to measure larger currents accurately.
Therefore, the small resistance connected in parallel with the galvanometer is used to decrease the overall resistance and convert it into an ammeter, not to increase the combined resistance as stated in the Reason.
Reason: The small resistance increases the combined resistance of the combination.
Explanation:
The Assertion states that to convert a galvanometer into an ammeter, a small resistance is connected in parallel with it. This means that when we want to measure larger currents using a galvanometer, we add a small resistance in parallel to the galvanometer. Let's understand why this is necessary.
- Galvanometer: A galvanometer is a sensitive instrument used to detect and measure small electric currents. It is based on the principle of the magnetic effect of electric currents.
- Ammeter: An ammeter is an instrument used to measure the flow of electric current in a circuit. It is designed to have low resistance and is connected in series with the circuit.
Reason: The small resistance increases the combined resistance of the combination.
- When a small resistance is connected in parallel with the galvanometer, it creates an additional path for the current to flow.
- In a parallel combination, the total resistance decreases as compared to an individual component. This is because the overall resistance is inversely proportional to the sum of the reciprocals of the individual resistances. So, as the resistance of the parallel branch is small, the combined resistance decreases.
- As the combined resistance decreases, more current can flow through the combination, and the galvanometer can measure larger currents accurately.
Explanation of Correct Answer:
The correct answer is option 'c' - If the Assertion is correct but the Reason is incorrect.
- The Assertion is correct because connecting a small resistance in parallel with a galvanometer is a common method to convert it into an ammeter.
- However, the Reason is incorrect because connecting a small resistance in parallel does not increase the combined resistance of the combination. Instead, it decreases the overall resistance, allowing the galvanometer to measure larger currents accurately.
Therefore, the small resistance connected in parallel with the galvanometer is used to decrease the overall resistance and convert it into an ammeter, not to increase the combined resistance as stated in the Reason.
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Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.Assertion: To convert a galvanometer into an ammeter a small resistance is connected in parallel with it.Reason: The small resistance increases the combined resistance of the combination.a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.b)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.c)If the Assertion is correct but Reason is incorrect.d)If both the Assertion and Reason are incorrect.Correct answer is option 'C'. Can you explain this answer?
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Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.Assertion: To convert a galvanometer into an ammeter a small resistance is connected in parallel with it.Reason: The small resistance increases the combined resistance of the combination.a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.b)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.c)If the Assertion is correct but Reason is incorrect.d)If both the Assertion and Reason are incorrect.Correct answer is option 'C'. 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: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.Assertion: To convert a galvanometer into an ammeter a small resistance is connected in parallel with it.Reason: The small resistance increases the combined resistance of the combination.a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.b)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.c)If the Assertion is correct but Reason is incorrect.d)If both the Assertion and Reason are incorrect.Correct answer is option 'C'. 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: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.Assertion: To convert a galvanometer into an ammeter a small resistance is connected in parallel with it.Reason: The small resistance increases the combined resistance of the combination.a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.b)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.c)If the Assertion is correct but Reason is incorrect.d)If both the Assertion and Reason are incorrect.Correct answer is option 'C'. Can you explain this answer?.
Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.Assertion: To convert a galvanometer into an ammeter a small resistance is connected in parallel with it.Reason: The small resistance increases the combined resistance of the combination.a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.b)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.c)If the Assertion is correct but Reason is incorrect.d)If both the Assertion and Reason are incorrect.Correct answer is option 'C'. 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: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.Assertion: To convert a galvanometer into an ammeter a small resistance is connected in parallel with it.Reason: The small resistance increases the combined resistance of the combination.a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.b)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.c)If the Assertion is correct but Reason is incorrect.d)If both the Assertion and Reason are incorrect.Correct answer is option 'C'. 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: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.Assertion: To convert a galvanometer into an ammeter a small resistance is connected in parallel with it.Reason: The small resistance increases the combined resistance of the combination.a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.b)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.c)If the Assertion is correct but Reason is incorrect.d)If both the Assertion and Reason are incorrect.Correct answer is option 'C'. Can you explain this answer?.
Solutions for Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.Assertion: To convert a galvanometer into an ammeter a small resistance is connected in parallel with it.Reason: The small resistance increases the combined resistance of the combination.a)If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.b)If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.c)If the Assertion is correct but Reason is incorrect.d)If both the Assertion and Reason are incorrect.Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
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