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A circular loop of 2 turns carries a cur...

A circular loop of 2 turns carries a current of `5*0A`. If the magnetic field at the centre of loop is `0*40mT`, find the radius of the loop.

Text Solution

Verified by Experts

Here, `n=2`, `I=5*0A`,
`B=0*4xx10^-3T`, `r=?`
Magnetic fied at the centre of current loop is
`B=(mu_0)/(4pi)(2pinl)/(r)` or `r=(mu_0)/(4pi)(2pinl)/(B)`
`:. r=10^-7xx2xx22/7xx(2xx5*0)/(0*4xx10^-3)`
`=157*1xx10^-4m=1*57cm`
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