By definition, the electric displacement current through a surface S is proportional to the

1. Magnetic flux through S
2. Rate of change of the magnetic flux through S
3. Time integral of the magnetic flux through S
4. The electric flux through S
5. Rate of change of the electric flux through S

By definition, the electric displacement current through a surface S is proportional to the

By definition, the electric displacement current through a surface S is proportional to the rate of change of the electric flux through S.

Displacement Current

The modified or generalization of Ampere’s law written as

$\mathbf{\oint&space;\vec{B}.\vec{dr}&space;=&space;\mu&space;_{0}I&space;+&space;\mu&space;_{0}&space;\varepsilon&space;_{0}\frac{d\phi&space;_{e}}{dt}}$

The term $\mathbf{\varepsilon&space;_{0}\frac{d\phi&space;_{e}}{dt}}$ has a dimension of current called displacement current.

$\mathbf{I_{d}&space;=&space;\varepsilon&space;_{0}\frac{d\phi&space;_{e}}{dt}}$

$\mathbf{I_{d}&space;\propto&space;\frac{d\phi&space;_{e}}{dt}}$

from above, the electric displacement current Id through a surface S is proportional to the rate of change of the electric flux $\mathbf{\frac{d\phi&space;_{e}}{dt}}$ through S.

 MSC Physics MCQs 1. Classical Mechanics 2. Quantum Mechanics 3. Electromagnetic Theory 4. Atomic Physics 5. Nuclear Physics 6. Solid State Physics 7. Electronics Physics 8. Heat and Thermodynamics 9. Mathematical Method for Physics 10. Special Theory of Relativity 11. Physical Wave Optics 12. Waves and Oscillations