9. (5%) If your eyes could see the fields of an electric dipole and a magnetic dipole, you would sense the field profiles are: (A)Different near the dipoles, (B) Different far from the dipoles, (C)Completely the same, (D) Completely different.

1. (5%) A cylindrical capacitor consists of an inner conductor of radius a, and an outer conductor whose inner radius is b. The space between the conductors is filled with a dielectric of permittivity ε. The length of the capacitor is L. The capacitance of this this capacitor is (A) C=2πεL/ln(b/a) (B) C=2πεL/In(a/b)(C)C=2πεL/In(ab) (D) none of the mentioned

9. (5%) If your eyes could see the fields of an electric dipole and a magnetic dipole, you would sense the field profiles are:
(A)Different near the dipoles,
(B) Different far from the dipoles,
(C)Completely the same,
(D) Completely different.

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