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Magnetic field induction at the centre …

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Magnetic field induction at the centre of Pentagon if its side a carries a current I ampere.

    • Posted by Shubham Gupta 5 years ago

    CBSE > Class 12 > Physics
    • 1 answers

    Khushi Jaiswal 5 years ago

    the triangle AMO, the angle can be written as, tanθ=r2l​​ tan30∘=r2l​​ r=23​l​ The magnetic field due to the side AB is given as, BAB​=4πμ0​​×ri​(sinθ+sinθ) =4πμ0​​×r2isinθ​ =4πμ0​​×23​l​2isin30∘​ =4πμ0​​×3​l2i​ Total magnetic field at the centre is given as, Bo​=6BAB​ =6×4πμ0​​×3​l2i​ =πlμ0​i3​​

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