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A current I = 5.0 A A flows along a t...

A current `I = 5.0 A` A flows along a thin wire shaped as shwon in Fig. The radius of a curved part of the wire is equal to `R = 120 mm`, the angle `2varphi = 90^(@)`. Find the magentic induction of the field at the point `O`.

A

`B=(pi-phi+sinphi)mu_(0)(I)/(2piR)`

B

`B=(pi-phi+tanphi)mu_(0)(I)/(2R)`

C

`B=(pi-phi+tanphi)mu_(0)(I)/(2piR)`

D

none of these

Text Solution

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The correct Answer is:
C
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