Question
In lab tests it was found that rats can detect electric fields of about $5.0 \mathrm{kN} / \mathrm{C}$ or more. If a point charge of $1.0 \mu \mathrm{C}$ is sitting in a maze, how close must the rat come to the charge in order to detect it?
Step 1
We know that the electric field (E) produced by a point charge (q) is given by the formula: E = k * q / r^2, where k is the electrostatic constant (8.99 x 10^9 N m^2/C^2), and r is the distance from the charge. Show more…
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