Answer / praveen

as led consists of parasitic capacitance during the supply it gets charged and discharges the stored energy when supply is not there this causes led to glow for some time

Answer / ghanshyam singh

but Mr. praveen, the led glows for a long time, often more
than one hour, and this is also rare i.e it does not happens
all time that led glows. sometime it turns off with the
supply.

Answer / ghanshyam singh

i think it's due to the leakage current/ flux.

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