Two Point Charges Each Experience A $1 - \mathrm { N }$

Two point charges each experience a $1 - \mathrm { N }$ electrostatic force when they are $2 \mathrm {~cm}$ apart. If they are moved to a new separation of $8 \mathrm {~cm}$ , what is the magnitude of the electric force on each of them?

A) $1 / 16 \mathrm {~N}$
B) $1 / 8 \mathrm {~N}$
C) $2 \mathrm {~N}$
D) $1 / 2 \mathrm {~N}$
E) $1 / 4 \mathrm {~N}$

Correct Answer:

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