Consider a toroid of circular cross - se...

Consider a toroid of circular cross - section of radius b, major radius R much greater than minor radius b, (see diagram) find the total energy stored in magnetic field of toroid -

`(B^(2)pi^(2)b^(2)R)/(2mu_(0))`

`(B^(2)pi^(2)b^(2)R)/(4mu_(0))`

`(B^(2)pi^(2)b^(2)R)/(8mu_(0))`

`(B^(2)pi^(2)b^(2)R)/(mu_(0))`

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