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A current carrying wire produces a magne...

A current carrying wire produces a magnetic field in its surrounding space
A. The S.I. unit of magnetic flux density is
a. henry
b. tesla
c. `Am^(2)`
d. A-m
B. With the help of a diagram, derive an expression for the magnetic field at the point on the axis of a circular current loop.
C. Consider a tightly wound 100 turn coil of radius 10 cm, carrying a current of 1 A. What is the magnitude of the magnetic field at the centre of the coil?

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