[填空题]
The RC circuit of Fig. Beld;2(-gkekrt,l jcgilpg7 (j 2ow a (same akb e 6t2tg7fptmc lle;/ f91*js Fig. Below b) has $R\,=\,6.7k\Omega$ and $C\,=\,3.0\,\mu F$. The capacitor is at voltage $V_0$ at $t=0$. when the switch is closed. How long does it take the capacitor to discharge to 1.0% of its initial voltage? $ \times10^{ -2}\;s$
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