Question
What happens to the magnitude of the electric force between two opposite charges if the magnitude of each charge is halved and the distance between their centers is halved?(A) It is doubled.(B) It is quadrupled.(C) It is halved.(D) It remains the same.
Step 1
Mathematically, this is expressed as: \[ F = k \frac{q_1 q_2}{r^2} \] where \( F \) is the force, \( k \) is Coulomb's constant, \( q_1 \) and \( q_2 \) are the charges, and \( r \) is the distance between the charges. Show more…
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What happens to the electric force between two point charges if the magnitude of both charges are doubled, and the distance between them is halved? (A) The force is halved. (B) The force remains the same. (C) The force is quadrupled. (D) The force increases by a factor of 16.
Practice Test 2
Section 1
Two identical point charges are a fixed distance apart. By what factor would the magnitude of the electric force between them change if (a) one of their charges were doubled and the other were halved, (b) both their charges were halved, and (c) one charge were halved and the other were left unchanged?
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