Practice MCAT Question - Q24 - Answer!
If the charge on a particle in an electric field is reduced to half its original value, the force exerted on the particle by the field is
A. doubled.
B. halved.
C. quadrupled.
D. unchanged.
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The correct answer is (B). The electric field strength is the ratio of the force exerted on a unit charge in the field:
E = F/q
Therefore, F and q are directly proportional and linearly related.
