When Charges Q_a,q_b,and Q_c Are Placed Respectively at the Corners

question 90

Multiple Choice

When charges q_a,q_b,and q_c are placed respectively at the corners a,b,and c of a right triangle,the potential at the midpoint of the hypotenuse is 24 V.When the charge q_a is removed,the potential at the midpoint becomes 17 V.When,instead,the charge q_b is removed (q_a and q_c both in place) ,the potential at the midpoint becomes 13 V.What is the potential at the midpoint if both charges q_a and q_c are removed?

• A)11 V
• B)7.0 V
• C)6.0 V
• D)18 V
• E)​17 V

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