(II) A capacitor is placed in parallel with some device, B as in Fig: 30-18b, to filter out stray high-frequency signals, but to allow ordinary 60-Hz AC to pass through with little loss. Suppose that circuit B in Fig: 30-18b is resistance R 490 Ω connected to ground, and that C = 0.35 pF. What percent of the incoming current will pass through C rather than R if it is (a) 60 Hz; (b) 60,000 Hz?