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Question

Two circular plates of radius 0.1 m are used to form a parallel plate capacitor. if displacement current between the plates is 2π ampere, then find magnetic field produced by displacement current 4 cm from the axis of the plates.
1080857_4e7c76be28874b11b3cdbce56cb07507.png

Solution
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From the relation
B.2πr=μ0Id
B=μ0Id2πr
B=μ04π×2Idr
B=107×2×2π0.04×100
B=π×105
Therefore magnetic field produced by displacement current 4cm from the axis of the plates is π×105

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1080857_4e7c76be28874b11b3cdbce56cb07507.png
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