Problem: A platypus foraging for prey can detect an electric field as small as 0.002 N/C To give an idea of the sensitivity of the platypus's electric sense, how far from a +10 nC point charge does the field have this magnitude?
FREE Expert Solution
The electric field due to point charge:
, where k is Coulomb's constant, q is the point charge, and r is the distance from the point charge.
From this equation, we can solve for r as:
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