Question

. Два равных по величине точечных заряда q1 и q2 расположены на расстоянии R друг от друга. Напряженность электрического поля в точке N, лежащей посредине между ними, равна Е0 .В точке М, удаленной на расстояние L от обоих зарядов, заряд q1 создает напряженность E1. Суммарная напряженность Е. На заряд q в точке М действует сила F.

Answer 1

найдите напряженность поля системы двух точечных зарядов:q1=3*10^-7 кл и q2=2*10^-7кл в точке,лежащей посередине между зарядами,если расстояние между ними 20 см.

Answer 2

Problem Analysis

We are given two point charges, q1 and q2, located at a distance R from each other. The electric field intensity at point N, which is located in the middle between the charges, is given as E0. At point M, which is located at a distance L from both charges, the charge q1 creates an electric field intensity E1. We need to find the total electric field intensity E and the force F acting on the charge q at point M.

Solution

To solve this problem, we can use the principle of superposition. According to this principle, the total electric field intensity at a point due to multiple charges is the vector sum of the electric field intensities created by each individual charge.

Let's consider the electric field intensity at point N, which is located in the middle between the charges q1 and q2. Since the charges are equal in magnitude, the electric field intensities created by each charge at point N will have the same magnitude but opposite directions. Therefore, the total electric field intensity at point N will be zero.

Now, let's consider the electric field intensity at point M, which is located at a distance L from both charges. The electric field intensity created by charge q1 at point M is given as E1. Since the charges q1 and q2 are equal in magnitude, the electric field intensity created by charge q2 at point M will also be E1, but in the opposite direction.

Therefore, the total electric field intensity at point M, E, can be calculated by adding the electric field intensities created by each charge:

E = E1 - E1 = 0

Since the total electric field intensity at point M is zero, the force acting on the charge q at point M will also be zero. Therefore, F = 0.

In summary, the total electric field intensity at point M is zero, and there is no force acting on the charge q at that point.

Conclusion

In the given scenario, the total electric field intensity at point M, which is located at a distance L from both charges, is zero. Therefore, there is no force acting on the charge q at point M.