Why does my energy-saving light bulb sporadically shine after it's been switched off? © Getty Images

Why does my energy-saving light bulb sporadically shine after it’s been switched off?

Dodgy low-energy light bulbs, sounds a bit seasonal!

Asked by: Joe Holland, Norwich

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I looked into this wondering if low-energy light bulbs somehow store charge and then release it sporadically after being turned off. But I found no evidence for that.

Or maybe they pick up power by induction from nearby electrical equipment. But short of a particle accelerator, I can’t think of anything with enough energy to do that. I reckon it must just be dodgy wiring.


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