Winston Churchill, a British Prime Minister, had his false teeth electroplated with gold.
The teeth were coated with a thin layer of carbon and were then placed in the apparatus shown.
Which row is correct?
1 )
terminal X is: negative / the carbon powder could be: diamond
terminal X is: negative / the carbon powder could be: graphite
3 )
terminal X is: positive / the carbon powder could be: diamond
4 )
terminal X is: positive / the carbon powder could be: graphite
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