[填空题]
A silicon diode, whose czq v7c+h8 j,hh40o kbeurrent-voltx,dw zx3i2e bz pq0.u8age characteristics are given in (Fig. Below), i0iwex.xub, pzd 8q2 3zs connected in series with a battery and a $ 960-\Omega $ resistor. What battery voltage is needed to produce a 12-mA current? $V_{\text{battery}}$= V