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A small conducting rod of length l, moves with a uniform velocity v in a uniform magnetic field B as shown in fig-
- a)Then the end X of the rod becomes positively charged
- b)the end Y of the rod becomes positively charged
- c)the entire rod is unevely charged
- d)the rod becomes hot due to joule heating
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A small conducting rod of length l, moves with a uniform velocity v in...
The rod is moving towards the right in a field directed into the page.
Now, if we apply Fleming's right hand rule, then the direction of induced current will be from end X to end Y.
But, according to Lenz's law the emf induced in the rod will be such that it opposes the motion of the rod.
Hence, the actual emf induced will be from end Y to end X. So, the current will also flow from end Y to end X.
Now, using the convention of current end Y should be positive and end X should be negative.
So, correct answer is option b
Now, if we apply Fleming's right hand rule, then the direction of induced current will be from end X to end Y.
But, according to Lenz's law the emf induced in the rod will be such that it opposes the motion of the rod.
Hence, the actual emf induced will be from end Y to end X. So, the current will also flow from end Y to end X.
Now, using the convention of current end Y should be positive and end X should be negative.
So, correct answer is option b
Most Upvoted Answer
A small conducting rod of length l, moves with a uniform velocity v in...
The rod is moving towards the right in a field directed into the page.
Now, if we apply Fleming's right hand rule, then the direction of induced current will be from end X to end Y.
But, according to Lenz's law the emf induced in the rod will be such that it opposes the motion of the rod.
Hence, the actual emf induced will be from end Y to end X. So, the current will also flow from end Y to end X.
Now, using the convention of current end Y should be positive and end X should be negative.
So, correct answer is option b
Now, if we apply Fleming's right hand rule, then the direction of induced current will be from end X to end Y.
But, according to Lenz's law the emf induced in the rod will be such that it opposes the motion of the rod.
Hence, the actual emf induced will be from end Y to end X. So, the current will also flow from end Y to end X.
Now, using the convention of current end Y should be positive and end X should be negative.
So, correct answer is option b
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Community Answer
A small conducting rod of length l, moves with a uniform velocity v in...
The flux is gradually increasing in a direction perpendicular to the plane of rod and going into the plane. So, according to Lenz law, the induced current will be in such a way that the induced field will oppose the increasing flux. For this to happen the induced field must go out of the plane and accordingly the induced current must flow from X to Y. If current is flowing from X to Y it means electrons are moving from Y to X and as a result end Y becomes positively charged and X becomes negatively charged. Also since there is no resistor, there will be no heat dissipated due to joule heating. The charge gets uniformly distributed as the rod is a conductor.
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A small conducting rod of length l, moves with a uniform velocity v in a uniform magnetic field B as shown in fig-a)Then the end X of the rod becomes positively chargedb)the end Y of the rod becomes positively chargedc)the entire rod is unevely chargedd)the rod becomes hot due to joule heatingCorrect answer is option 'B'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about A small conducting rod of length l, moves with a uniform velocity v in a uniform magnetic field B as shown in fig-a)Then the end X of the rod becomes positively chargedb)the end Y of the rod becomes positively chargedc)the entire rod is unevely chargedd)the rod becomes hot due to joule heatingCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A small conducting rod of length l, moves with a uniform velocity v in a uniform magnetic field B as shown in fig-a)Then the end X of the rod becomes positively chargedb)the end Y of the rod becomes positively chargedc)the entire rod is unevely chargedd)the rod becomes hot due to joule heatingCorrect answer is option 'B'. Can you explain this answer?.
A small conducting rod of length l, moves with a uniform velocity v in a uniform magnetic field B as shown in fig-a)Then the end X of the rod becomes positively chargedb)the end Y of the rod becomes positively chargedc)the entire rod is unevely chargedd)the rod becomes hot due to joule heatingCorrect answer is option 'B'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about A small conducting rod of length l, moves with a uniform velocity v in a uniform magnetic field B as shown in fig-a)Then the end X of the rod becomes positively chargedb)the end Y of the rod becomes positively chargedc)the entire rod is unevely chargedd)the rod becomes hot due to joule heatingCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A small conducting rod of length l, moves with a uniform velocity v in a uniform magnetic field B as shown in fig-a)Then the end X of the rod becomes positively chargedb)the end Y of the rod becomes positively chargedc)the entire rod is unevely chargedd)the rod becomes hot due to joule heatingCorrect answer is option 'B'. Can you explain this answer?.
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A small conducting rod of length l, moves with a uniform velocity v in a uniform magnetic field B as shown in fig-a)Then the end X of the rod becomes positively chargedb)the end Y of the rod becomes positively chargedc)the entire rod is unevely chargedd)the rod becomes hot due to joule heatingCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for A small conducting rod of length l, moves with a uniform velocity v in a uniform magnetic field B as shown in fig-a)Then the end X of the rod becomes positively chargedb)the end Y of the rod becomes positively chargedc)the entire rod is unevely chargedd)the rod becomes hot due to joule heatingCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of A small conducting rod of length l, moves with a uniform velocity v in a uniform magnetic field B as shown in fig-a)Then the end X of the rod becomes positively chargedb)the end Y of the rod becomes positively chargedc)the entire rod is unevely chargedd)the rod becomes hot due to joule heatingCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice A small conducting rod of length l, moves with a uniform velocity v in a uniform magnetic field B as shown in fig-a)Then the end X of the rod becomes positively chargedb)the end Y of the rod becomes positively chargedc)the entire rod is unevely chargedd)the rod becomes hot due to joule heatingCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 12 tests.
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