Determine for how long can the capacitor sustain the light

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A 1.4 mF capacitor has initial voltage of 19 V.The energy stored in the capacitor is used to light up a 0.5 KOhm lamp.Assuming that the lamp is completely dimmed when the current through it is less than 0.4 mA, for how long can the capacitor sustain the light?

Reference no: EM13269593

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