Three 250 μC Charges Are Placed on Tiny Conducting Spheres at at the Ends

question 7

Multiple Choice

Three 2.50 μC charges are placed on tiny conducting spheres at the ends of 1.00 m-long strings that are connected at 120° angles as shown below.The magnitude,in N,of the force on any one of the charges is

• A)1.88 × 10−².
• B)3.25 × 10−².
• C)3.73 × 10−².
• D)6.50 × 10−².
• E)7.50 × 10−².