We had a bit of a fun night at a local village hall last night. I took a small hand cranked 15 Volt generator and a one Watt car bulb of the tungsten filament type. I asked people for how long they could crank the generator handle to keep the bulb fully lit. Perhaps a few minutes for most people. The bulb was rated at just one Watt, the type that was found in interior lights in cars in the past.
So, I thought as it is just so hard to generate electricity by hand, the cost of a kWhr or mains power is quite inexpensive.
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