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Ivenika [448]
4 years ago
15

When an electric current flows through a wire, the current produces which of the following?

Physics
2 answers:
mixas84 [53]4 years ago
7 0

Answer:

Its A :)

Explanation:

ELEN [110]4 years ago
4 0
An electric current produces a magnetic field when the current flows through a wire. The correct answer will be A. 
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Explanation:

It is given that,

Radius of loop, r = 78 mm = 0.078 m

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(a) Magnetic field strength of the circular loop is given by :

B=\dfrac{\mu_oI}{2R}

B=\dfrac{4\pi \times 10^{-7}\times 114}{2\times 0.078}

B = 0.000918 T

or

B=9.18\times 10^{-4}\ T

(b) Energy density at the center of the loop is given by :

U=\dfrac{B^2}{2\mu_o}

U=\dfrac{(0.000918)^2}{2\times 4\pi \times 10^{-7}}

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