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Electric Charges And Fields

Question

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A vertical metallic pole falls down through the plane of magnetic meridian. Will any emf be induced between its ends?

Solution

No emf is induced in the metallic case. When

\vec{l} and \vec{v}

are parallel, no emf is induced.

Some More Questions From Electric Charges and Fields Chapter

a) An electrostatic field line is a continuous curve. That is, a field line cannot have sudden breaks. Why not?
b) Explain why two field lines never cross each other at any point?

Figure shows tracks of three charged particles in a uniform electrostatic field. Give the signs of the three charges. Which particle has the highest charge to mass ratio?

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