consider a tightly wound 10 turn coil of radius 10cm , carrying a current of 1A. what is the magnitude of the magnetic field at the centre of the coil?
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Answer:
Number of turns in the coil N=100
Radius of coil r=0.1 m
Current flowing in the coil I=1 A
Magnetic field at the center of the coil B=
2r
μ
o
IN
∴ B=
2×0.1
4π×10
−7
×1×100
⟹ B=6.28×10
−4
T
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