Question

@dan815

Answer 1

It says charges \(+q\) and \(-q\) are separated by a distance 50 cm. Now there are two electric field lines leaving the charges at angles \(\pm 45^{\circ}\) and they're in the same plane. What's the maximum distance between then in centimetres?

Answer 2

I just calculated the general force at a point \((x, y)\) assuming a coordinate system. All I know about electric field lines is that they're curves whose tangents lie in the direction of the electric field at that point. Is that enough to know?