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A long metal bar of 30 cm length is aligned along a north south line and moves eastward at a speed of 10 ms-1. A uniform magnetic field of 4.0 T points vertically downwards. If the south end of the bar has a potential of 0V, the induced potential at the north end of the bar is
  • a)
     + 12 V
  • b)
    -12 V
  • c)
    0 V
  • d)
    Cannot be determined since there is not closed circuit
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
A long metal bar of 30 cm length is aligned along a north south line a...
Induced emf =Blv=12V. It is induced in the northward direction by right hand rule (emf=)
therefore if the south end of the pole has potential of 0V, the north end will have a potential of 12V.
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Community Answer
A long metal bar of 30 cm length is aligned along a north south line a...
Induce emf e=BVL
=4×10×0.3
=12v
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A long metal bar of 30 cm length is aligned along a north south line and moves eastward at a speed of 10 ms-1. A uniform magnetic field of 4.0 T points vertically downwards. If the south end of the bar has a potential of 0V, the induced potential at the north end of the bar isa)+ 12 Vb)-12 Vc)0 Vd)Cannot be determined since there is not closed circuitCorrect answer is option 'A'. 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 long metal bar of 30 cm length is aligned along a north south line and moves eastward at a speed of 10 ms-1. A uniform magnetic field of 4.0 T points vertically downwards. If the south end of the bar has a potential of 0V, the induced potential at the north end of the bar isa)+ 12 Vb)-12 Vc)0 Vd)Cannot be determined since there is not closed circuitCorrect answer is option 'A'. 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 long metal bar of 30 cm length is aligned along a north south line and moves eastward at a speed of 10 ms-1. A uniform magnetic field of 4.0 T points vertically downwards. If the south end of the bar has a potential of 0V, the induced potential at the north end of the bar isa)+ 12 Vb)-12 Vc)0 Vd)Cannot be determined since there is not closed circuitCorrect answer is option 'A'. Can you explain this answer?.
Solutions for A long metal bar of 30 cm length is aligned along a north south line and moves eastward at a speed of 10 ms-1. A uniform magnetic field of 4.0 T points vertically downwards. If the south end of the bar has a potential of 0V, the induced potential at the north end of the bar isa)+ 12 Vb)-12 Vc)0 Vd)Cannot be determined since there is not closed circuitCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12. Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
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