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  • A parallel plate capacitor made of circular plates is being charged such that the surface charge density on its plates is increasing at a constant rate withotime. The magnetic field arising due to displacement current is :

Q.24) A parallel plate capacitor made of circular plates is being charged such that the surface charge density on its plates is increasing at a constant rate withotime. The magnetic field arising due to displacement current is :
 

A) zero betwedn the plates and non-zero outside
 

B) zero at all paces
 

C) constant befween the plates and zero outside the plates
 

D) non-zero everywhere with maximum at the imaginary cylindrical surface connecting peripheries of the plates

 

Answers (1)

best_answer

Q.24) Correct Option: (4)
Solution:
As the capacitor charges, the increasing surface charge density creates a time-varying electric field between the plates, which gives rise to a displacement current. According to Maxwell's equations, this displacement current produces a magnetic field. This magnetic field is non-zero inside the region between the plates and is azimuthal in nature. It reaches a maximum at the edge (the cylindrical surface connecting the peripheries).
Hence, the answer is option (4).

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