MCQ
Consider the two idealised systems $(i)$ a parallel plate capacitor with large plates and small separation and $(ii)$ a long solenoid of length $L >> R$, radius of cross-section. In $(i)\, E$ ideally treated as a constant between plates and zero outside. In $(ii)$ magnetic field is constant inside the solenoid and zero outside. These idealised assumptions, however, contradict fundamental laws as below
- ACase $(i)$ contradicts Gauss' law for electrostatic fields
- ✓Case $(ii)$ contradicts Gauss' law for magnetic fields
- CCase $(i)$ agrees with $\oint {E.dl = 0} $
- DCase $(ii)$ contradicts $\oint {H.dl = {I_{en}}} $
