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A conducting ring of radius 1 meter is placed in an uniform magnetic field B of 0.01 tesla coscilliating with frequency 100Hz with its plane at right anglesto B. What will be the induced electric field. |
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Answer» `pivolt//m` i.e., `T=1//100s`, in time `T//2` FLUX links with coil changes from `BA` to zero. :. Induced emf `=("CHANGE in flux")/("time")` `=(BA)/(T//2)=(2BA)/(T)` `=2Bxxpir^(2))/(T)` `(2xx0.01xxpixx1^(2))/(1//100)=4piV` induced electric field along the circle, using maxwell equatiion `ointE.dl=-(dphi)/(dt)=A(DB)/(dt)=e` :. `E=(1)/(2pir)xx(pir^(2)xx(dB)/(dt))=(e)/(2pir)=(4pi)/(2pir)=2V//m` |
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