As Shown in the Figure, the Charge Q Is Midway $Q = - 7.5 \mathrm { nC } ,$

question 82

Multiple Choice

As shown in the figure, the charge Q is midway between two other charges. If $Q = - 7.5 \mathrm { nC } ,$ what must be the charge q1 so that charge q2 remains stationary as Q and q1 are held in place?

• A)30 nC
• B)15 nC
• C)7.5 nC
• D)60 nC

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