Point charges of 21.0 µC and 49.0 µC are placed 0.500 m apart.

(a) At what point along the line connecting them is the electric field zero? (from the smaller charge)
(b) What is the magnitude and direction of the electric field halfway between them?

Question

Point charges of 21.0 µC and 49.0 µC are placed 0.500 m apart.

    (a) At what point along the line connecting them is the electric field zero? (from the smaller charge)
    (b) What is the magnitude and direction of the electric field halfway between them?

parthkohli · Answer

For (a), you can see that if the electric field is zero, then the two electric fields from the two charges will cancel each other out, meaning that they are opposite in direction, meaning that the point is placed somewhere between the two charges.

parthkohli · Answer

Do you need help figuring out the exact position of the point?

anonymous · Answer

ya

anonymous · Answer

please

anonymous · Answer

r=q/a ?

parthkohli · Answer

First of all, let's draw a diagram to clear things up.|dw:1409490841989:dw|