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An ammeter and a voltmeter of resistance R are connected in series to an electric cell of negligible internal resistance. Thier readings are A and V respectively. If another resistance R is connected in parallel with the voltmeter.
- a)Both A and V will increase
- b)Both A and V will decrease
- c)A will decrease and V will increase
- d)A will increase and V will decrease
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
An ammeter and a voltmeter of resistance R are connected in series to ...
Explanation:
When an ammeter and a voltmeter of resistance R are connected in series to an electric cell of negligible internal resistance, the circuit looks like this:
Electric cell ------ Ammeter ------ Voltmeter ------ (R)
Where R is an external resistance.
The readings of the ammeter and voltmeter are A and V respectively.
Now, if another resistance R is connected in parallel with the voltmeter, the circuit looks like this:
Electric cell ------ Ammeter ------ Voltmeter
|
(R)
The effect of adding a parallel resistance R is that the overall resistance of the circuit decreases. This is because the parallel resistance provides an alternate path for the current to flow, bypassing the voltmeter. As a result, the current through the ammeter increases and the voltage across the voltmeter decreases.
Therefore, the readings of the ammeter and voltmeter will change as follows:
- The reading of the ammeter will increase because the overall current through the circuit increases due to the addition of the parallel resistance.
- The reading of the voltmeter will decrease because the voltage across the voltmeter decreases due to the addition of the parallel resistance.
Hence, option D is the correct answer.
When an ammeter and a voltmeter of resistance R are connected in series to an electric cell of negligible internal resistance, the circuit looks like this:
Electric cell ------ Ammeter ------ Voltmeter ------ (R)
Where R is an external resistance.
The readings of the ammeter and voltmeter are A and V respectively.
Now, if another resistance R is connected in parallel with the voltmeter, the circuit looks like this:
Electric cell ------ Ammeter ------ Voltmeter
|
(R)
The effect of adding a parallel resistance R is that the overall resistance of the circuit decreases. This is because the parallel resistance provides an alternate path for the current to flow, bypassing the voltmeter. As a result, the current through the ammeter increases and the voltage across the voltmeter decreases.
Therefore, the readings of the ammeter and voltmeter will change as follows:
- The reading of the ammeter will increase because the overall current through the circuit increases due to the addition of the parallel resistance.
- The reading of the voltmeter will decrease because the voltage across the voltmeter decreases due to the addition of the parallel resistance.
Hence, option D is the correct answer.
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Community Answer
An ammeter and a voltmeter of resistance R are connected in series to ...
If a resistance is connected in parallel the effective resistance decreases and becomes less than the smallest resistance connected in the combination. So the effective resistance of the voltmeter and the resistance combination will become less than the resistance of the voltmeter even if R is greater than the resistance of the voltmeter. So effective resistance of the circuit decreases. Thus, the reading of the voltmeter decreases.Hence the current in the circuit and therefore the reading of the ammeter increases.
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An ammeter and a voltmeter of resistance R are connected in series to an electric cell of negligible internal resistance. Thier readings are A and V respectively. If another resistance R is connected in parallel with the voltmeter.a)Both A and V will increaseb)Both A and V will decreasec)A will decrease and V will increased)A will increase and V will decreaseCorrect answer is option 'D'. Can you explain this answer?
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An ammeter and a voltmeter of resistance R are connected in series to an electric cell of negligible internal resistance. Thier readings are A and V respectively. If another resistance R is connected in parallel with the voltmeter.a)Both A and V will increaseb)Both A and V will decreasec)A will decrease and V will increased)A will increase and V will decreaseCorrect answer is option 'D'. 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 An ammeter and a voltmeter of resistance R are connected in series to an electric cell of negligible internal resistance. Thier readings are A and V respectively. If another resistance R is connected in parallel with the voltmeter.a)Both A and V will increaseb)Both A and V will decreasec)A will decrease and V will increased)A will increase and V will decreaseCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An ammeter and a voltmeter of resistance R are connected in series to an electric cell of negligible internal resistance. Thier readings are A and V respectively. If another resistance R is connected in parallel with the voltmeter.a)Both A and V will increaseb)Both A and V will decreasec)A will decrease and V will increased)A will increase and V will decreaseCorrect answer is option 'D'. Can you explain this answer?.
An ammeter and a voltmeter of resistance R are connected in series to an electric cell of negligible internal resistance. Thier readings are A and V respectively. If another resistance R is connected in parallel with the voltmeter.a)Both A and V will increaseb)Both A and V will decreasec)A will decrease and V will increased)A will increase and V will decreaseCorrect answer is option 'D'. 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 An ammeter and a voltmeter of resistance R are connected in series to an electric cell of negligible internal resistance. Thier readings are A and V respectively. If another resistance R is connected in parallel with the voltmeter.a)Both A and V will increaseb)Both A and V will decreasec)A will decrease and V will increased)A will increase and V will decreaseCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An ammeter and a voltmeter of resistance R are connected in series to an electric cell of negligible internal resistance. Thier readings are A and V respectively. If another resistance R is connected in parallel with the voltmeter.a)Both A and V will increaseb)Both A and V will decreasec)A will decrease and V will increased)A will increase and V will decreaseCorrect answer is option 'D'. Can you explain this answer?.
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An ammeter and a voltmeter of resistance R are connected in series to an electric cell of negligible internal resistance. Thier readings are A and V respectively. If another resistance R is connected in parallel with the voltmeter.a)Both A and V will increaseb)Both A and V will decreasec)A will decrease and V will increased)A will increase and V will decreaseCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for An ammeter and a voltmeter of resistance R are connected in series to an electric cell of negligible internal resistance. Thier readings are A and V respectively. If another resistance R is connected in parallel with the voltmeter.a)Both A and V will increaseb)Both A and V will decreasec)A will decrease and V will increased)A will increase and V will decreaseCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of An ammeter and a voltmeter of resistance R are connected in series to an electric cell of negligible internal resistance. Thier readings are A and V respectively. If another resistance R is connected in parallel with the voltmeter.a)Both A and V will increaseb)Both A and V will decreasec)A will decrease and V will increased)A will increase and V will decreaseCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
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