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## What is the value of Q in electric field?

Here are some facts about the electric field from point charges: 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/r ^{2}**, where k is a constant with a value of 8.99 x 10

^{9}N m

^{2}/C

^{2}.

## What is Q in physics electric field?

The electric field strength is defined as the amount of force per unit of charge on the test charge. E = F / q. The electric field strength (E) is defined as the **amount of force exerted upon a test charge per unit of charge on** the test charge (q).

## What is current formula?

The current is the ratio of the potential difference and the resistance. It is represented as (I). The current formula is given as **I = V/R**. The SI unit of current is Ampere (Amp).

## Can electric field be negative?

**Electric field is not negative**. It is a vector and thus has negative and positive directions. An electron being negatively charged experiences a force against the direction of the field. For a positive charge, the force is along the field.