A platypus foraging for prey can detect an electric field as small as 0.002 N/C.
To give an idea of sensitivity of the platypus’s electric sense, how far from a +10nC point charge does the field have this magnitude?Express your answer with the appropriate units.
Thank you
1 Answer
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electric field E = 9×10’9 q / d’2
so that distance d = sq.root ( 9×10’9×10’-8 / 2×10’-3) = 150×1.414 = 212.1m.
