Q5.4Multiple choice
Consider the two idealized 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 is 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:
- (a)case (i) contradicts Gauss’s law for electrostatic fields.
- (b)case (ii) contradicts Gauss’s law for magnetic fields.
- (c)case (i) agrees with E.dl = 0 .
- (d)case (ii) contradicts H.dl = I en