A Particle (Charge = +40 $\mu$ C)is Located on the X Axis at the Point X

question 82

Multiple Choice

A particle (charge = +40 $\mu$ C) is located on the x axis at the point x = -20 cm,and a second particle (charge = -50 $\mu$ C) is placed on the x axis at x = +30 cm.What is the magnitude of the total electrostatic force on a third particle (charge = -4.0 $\mu$ C) placed at the origin (x = 0) ?

• A)41 N
• B)16 N
• C)56 N
• D)35 N
• E)72 N