Sanchari Pal Asked a Question
December 28, 2019 11:42 ampts 15 pts
Magnetic field outside a solenoid is zero. How the question is even valid?
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  • Paltu Sen thankyou
    Great!! you have pointed out the right thing...In question they should mention the current through which portion of the conducting medium. Here we are actually getting a volume cu...
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  • Sanchari Pal
    Why Electric field is proportional to emf? as integration( E. dl) =Emf. then E*2pi*r =Emf. and now this EMf is proportional to the current. means only right hand side should be pr...
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  • Paltu Sen
    You just imagine a circular disc of radius r, perpendicular to the axis of the cylinder and find the magnetic flux through this disc. For better understanding you can study Griffit...
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  • Paltu Sen
    1.The induced current is proportional to induced emf which is proportional to induced circumferential electric field here. 2. Since the value of B is nonzero inside the solenoid we...
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  • Sanchari Pal
    first of all the 1)induced current is asked not the Electric fied 2)2ndly the value of B = (neu)o nI is valid inside the solenoid not outside it. then? how is this response is vali...
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  • Paltu Sen Best Answer
    ans) opt-d
    • upload_1577519724836.jpg
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