Two charges, q1 = 5 μC and q2 = 7 μC, are separated by 25 cm....

Two charges, q1 = 5 μC and q2 = 7 μC, are separated by 25 cm. Where should a third charge be placed on the line between them such that the resultant force on it will be zero? Does it matter if the third charge is positive or negative?

Expert Solution

The third charge will experience zero net force if and only if the force on the third charge due to charge q1 is equal to force on the third charge due to charge q2. When we will solve this using Coulomb's law, we will get that this third charge is at a distance of 11.45 cm from q1=5micro C and at a distance of 13.55 cm from q2=7 micro Coulomb. No, the answer will not depends on the nature(+ve or -ve) of this third charge. The magnitude or nature of this third charge will not change this distance.

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genius_generous answered 2 years ago

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