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Magnetic and Non Magnetic Materials

Magnetic fiel...

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Magnetic field at the centre of regular polygon of 'n' sides which is formed by wire, which carriescurrent I and side of polygon is 'a

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Q. A regular polygon of n sides is formed by bending a wire of total length

2 π r

which carries a current

i

. Find the magnetic field

B

at the centre of the polygon.

Q. Magnetic field due to regular polygon of side

n

made up of total length

2 π R

which carries current

I

. Find the magnetic field at the centre of polygon.

Q. A regular polygon of

n

sides is formed by bending a wire of total length

2 π r

which carries a current

i

. (a) Find the magnetic field

B

at the centre of the polygon. (b) By letting

n \to \infty

, deduce the expression for the magnetic field at the centre of a circular current.

Q. A regular polygon of

n

sides is formed by bending a wire of total length

2 π r

which carries a current

i

. If number of sides of a polygon so formed has infinite sides, then the magnetic field at the centre of a circular current is

\frac{μ_{0} i}{m R}

m

Q. A regular polygon of n sides is formed by bending a wire of total length

2 π r

which carries a current

i

n \to \infty

, deduce the expression for the magnetic field at the centre of a circular coil.

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