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Electric Charges And Fields

Question

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The electric field due to an infinitely long thin wire at a distance R varies as
$\frac{1}{R}$
1 /R²
R
R²

Solution

B.

1 /R²

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?

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