Answer: B - According to Coulomb’s law, the attractive or repulsive force is F = (q1*q2)/r2. From this equation we can see that if we need to split a charge, if q1 =q2 we can produce the greatest force.

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Praxis II General Science

Category - Physics

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Andy has a metal sphere that has a charge of 0.5 coulombs on it. He wants to remove some of this charge and place it on a second sphere, and use the two spheres to repel each other. How much charge should be transplanted to produce the greatest force?

0.1 C
0.25 C
0.35 C
0.40 C
0.50 C

Explanation

Answer: B - According to Coulomb’s law, the attractive or repulsive force is F = (q1*q2)/r². From this equation we can see that if we need to split a charge, if q1 =q2 we can produce the greatest force.

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Praxis II General Science

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