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 with time. The magnetic field arising due to displacement current is [2025]

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Q.
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 with time. The magnetic field arising due to displacement current is [2025]

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

2 zero between the plates and non-zero outside

3 zero at all places

4 constant between the plates and zero outside the plates.

Ans.
(1)

The magnetic field arising due to displacement current is non zero everywhere with maximum at the imaginary cylindrical surface connecting peripheries of the plates. This is because the displacement current is strongest there, where the changing electric field is most concentrated.

Solution

Q.
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 with time. The magnetic field arising due to displacement current is [2025]

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

2 zero between the plates and non-zero outside

3 zero at all places

4 constant between the plates and zero outside the plates.

Ans.
(1)

The magnetic field arising due to displacement current is non zero everywhere with maximum at the imaginary cylindrical surface connecting peripheries of the plates. This is because the displacement current is strongest there, where the changing electric field is most concentrated.

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Solution

Q. 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 with time. The magnetic field arising due to displacement current is [2025]

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

2 zero between the plates and non-zero outside

3 zero at all places

4 constant between the plates and zero outside the plates.

Ans. (1) The magnetic field arising due to displacement current is non zero everywhere with maximum at the imaginary cylindrical surface connecting peripheries of the plates. This is because the displacement current is strongest there, where the changing electric field is most concentrated.

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Q.
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 with time. The magnetic field arising due to displacement current is [2025]

Ans.
(1)

The magnetic field arising due to displacement current is non zero everywhere with maximum at the imaginary cylindrical surface connecting peripheries of the plates. This is because the displacement current is strongest there, where the changing electric field is most concentrated.