Question

Point charge of \( 10 \, \mu C \) is placed at the origin. At what location on the X-axis should a point charge of \( 40 \, \mu C \) be placed so that the net electric field is zero at \( x = 2 \, \text{cm} \) on the X-axis?

• A. \( 6 \, \text{cm} \)
• B. \( 4 \, \text{cm} \)
• C. \( 8 \, \text{cm} \)
• D. \( -4 \, \text{cm} \)

Hint:

When determining the position for zero net electric field, equate the magnitudes of electric fields from the charges and carefully solve the resulting equation. Consider the geometry and direction of forces to select the correct solution.