# Question: How can we find electric field for a group of charges?

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The electrostatic force exerted by a point charge on a test charge at a distance r depends on the charge of both charges, as well as the distance between the two. The electric field E is defined to be E=Fq E = F q , where F is the Coulomb or electrostatic force exerted on a small positive test charge q.

## What is the formula to find electric field?

In vector calculus notation, the electric field is given by the negative of the gradient of the electric potential, E = −grad V. This expression specifies how the electric field is calculated at a given point. Since the field is a vector, it has both a direction and magnitude.

## How do you find the electric field between two plates?

Since the field lines are parallel to each other, this type of electric field is uniform and has a magnitude which can be calculated with the equation E = V/d where V represents the voltage supplied by the battery and d is the distance between the plates.

## How do you find the electric field in origin?

There is no charge at the origin. In the formula E = kQ/r2, Q is the charge that is producing the electric field. Each of the two charges that are given in the problem is producing electric field at the origin.

## How do you find electric field with distance and charge?

the magnitude of the electric field (E) produced by a point charge with a charge of magnitude Q, at a point a distance r away from the point charge, is given by the equation E = kQ/r2, where k is a constant with a value of 8.99 x 109 N m2/C2.

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## How do you find the electric field in Class 12?

Electric Field

1. SI unit of electric field is N/C (Force/Charge).
2. Electric field due to a charge at a point is the force that a unit positive charge would experience if placed at that point.
3. The charge generating electric field is called source charge and the charge which experiences this field is called test charge.