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/r2, where k is a constant with a value of 8.99 x 109 N m2/C2.
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.