# Electric field stength

1. Mar 30, 2007

### NW8800

Hey,

I have tried this question... But I cant seem to get the answer right... I get about 27.85cm... But I think this value is incorrect...

Can someone try this, and tell me what they got/how they did it?

Thanks.

NW

2. Mar 30, 2007

### lpfr

For the field to be zero, both intensities must be identical (they are of opposite sign). Write this equality. Simplify and extract the square root! You will have a simple first degree equation. I obtain a result between -50 and -40 cm.

Last edited: Mar 30, 2007
3. Mar 30, 2007

### QuantumCrash

Show us your working and we can check it for you.

If one is attractive and the other repulsive that means that the coordinate cannot be between the particles. Sice your answer is, you should realise it soen't make sense.