Asource charge generates an electric field of 4286 n/c at a distance of 2.5 m. what is the magnitude of the source charge?

1.2 µc
3.0 µc
1.2 c
3.0 c

Answer : Charge,

Explanation :

It is given that :

Electric field,

Distance,

We know that the electric field at any point is given by :

k is the electrostatic constant.

q is the electric charge

r is the distance.

or

The correct option is (b).

Hence, this is the required solution.

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards