At what distance (in meters) from a point charge of 7.2×10−16 C does the field produced by this charge have a magnitude of 5.5×10−2 N/C? |
here,
the point charge , q = 7.2 * 10^-16 C
let the distance from the charge of that point be r
the magnitude of electric feild , E = K * q /r^2
5.5 * 10^-2 = 9 * 10^9 * 7.2 * 10^-16 /r^2
solving for r
r = 1.09 * 10^-2 m
the distance from the charge of that point is 1.09 * 10^-2 m
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