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Definition of a Conic

What is a dip...

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What is a dipole field? Why does the dipole field at large distance falls off faster than 1/r2

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Q. The earth's field departs from its dipole shape substantially at large distance (greater than about

3000

km). The responsible factor for this distortion is then?

Q. The magnitude of electric field intensity at point

P (2, 0, 0)

due to a dipole of dipole moment,

\to p =^i + \sqrt{3}^j

kept at origin is -

(

Assume that the point

P

is at large distance from the dipole and

K = \frac{1}{4 π ϵ_{0}})

Q. Statement I: The electric field due to a very small dipole at a large distance from its centre along its axis is

\frac{2 \to P}{4 π ε_{0} r^{3}} .

Statement II: Coulomb’s inverse square law is not valid in case of electric field due to a dipole.

Q. Assertion :A planar circular loop of area A and carrying current I is equivalent to magnetic dipole of dipole moment M

=

IA. Reason: At large distances, magnetic field of circular loop and magnetic dipole is same.

Q. The electric field and the potential of an electric dipole vary with distance r respectively as:

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