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SAT® Subject Test in Physics

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Moderate

Moving the Charge Closer

SATPHY-9XGKJN

Pictured below is a red point charge and a blue point charge.

The blue point charge is moved from location 1 to location 2. The force between the point charges is $5.00\ N$ when the blue charge is at location 1.

How much force exists between the point charges when the blue charge is at location 2?

A

$25.0\ N$

B

$30.0\ N

C

$125\ N$

D

$180\ N$

E

$1.0\ N$