If a finite length of wire having a total length QR = 80 m, a current of 10 A is flowing in it.A point P from the origin point or reference point is away at a distance of 4 mm. If the point P is making an angle of 75° with the point Q in clockwise direction and 60° with the point R in anticlockwise direction. What will be the magnetic field density B, at point P.a)1.68 m-Wb/m2b)1.12 m-Wb/m2c)0.682 m-Wb/m2d)0.458 m-Wb/m2Correct answer is option 'D'. Can you explain this answer?

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If a finite length of wire having a total length QR = 80 m, a current of 10 A is flowing in it.

A point P from the origin point or reference point is away at a distance of 4 mm. If the point P is making an angle of 75° with the point Q in clockwise direction & 60° with the point R in anticlockwise direction. What will be the magnetic field density B, at point P.

a)
1.68 m-Wb/m²
b)
1.12 m-Wb/m²
c)
0.682 m-Wb/m²
d)
0.458 m-Wb/m²

Correct answer is option 'D'. Can you explain this answer?

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If a finite length of wire having a total length QR = 80 m, a current...

As we know that due to a finite length of wire in which I current is flowing, at a point P where the point P makes angle θ₁ with point θ in clockwise direction &θ₂ with R in anticlockwise direction is calculated as-

B =

where the sign of angle is tve, is being taken, a is the distance from a reference point.

S₀ B at point P

B =

= 2.5 x 10^-4(0.966 + 0.866)

= 0.458 x 10^-3Wb/m²

B = 0.458 m-Wb/m²

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If a finite length of wire having a total length QR = 80 m, a current of 10 A is flowing in it.A point P from the origin point or reference point is away at a distance of 4 mm. If the point P is making an angle of 75° with the point Q in clockwise direction & 60° with the point R in anticlockwise direction. What will be the magnetic field density B, at point P.a)1.68 m-Wb/m2b)1.12 m-Wb/m2c)0.682 m-Wb/m2d)0.458 m-Wb/m2Correct answer is option 'D'. Can you explain this answer?

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