Question

訪客

第5題的解，謝謝。

(A) 100 yrqd/s 。(B) 110 ryqd/<       (C) 120 yod/#      (D) 130 rod/#

(”) 5. A parallel plate capacitor has circular plates of radius 2 cm separated by 3 mm. If
the potential difference between the plates changes at 5x 10+ V/s, what is the
displacement current?

(A) 2.9x10-5A (8B) 2.9x10-*A。(C) 2.9x 10-7A。(D) 2.9x10-A

( )6.Aconvex mirror of focal length 30 cm produces an image with a magnification 0.4.