# Frequent question: What is the formula of electric field Class 12?

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

## What is the formula and unit of electric field?

The space around an electric charge in which its influence can be felt is known as the electric field. The electric field intensity at a point is the force experienced by a unit positive charge placed at that point. … Formula: Electric Field = F/q. Unit of E is NC1 or Vm1.

## What is electric field explain through formula?

Electric field can be considered as an electric property associated with each point in the space where a charge is present in any form. An electric field is also described as the electric force per unit charge. The formula of electric field is given as; E = F /Q.

## What is electric field class 12th?

Electric field is a force produced by a charge near its surroundings. This force is exerted on other charges when brought in the vicinity of this field. … Electric field due to a charge at a point is the force that a unit positive charge would experience if placed at that point.

## What is electric potential class 12th?

Electric potential at a point in an electric field is defined as the amount of work done in moving a unit positive test charge from infinity to that point against the electrostatic forces, along any path.

## How do you calculate the electric field?

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. E has units of N/C. The magnitude of the electric field E created by a point charge Q is E=k|Q|r2 E = k | Q | r 2 , where r is the distance from Q.

## What is the formula of magnetic field?

The dimensional formula of Magnetic field is given as M1 T-2 I-1.

## What is current formula?

The current formula is given as I = V/R. The SI unit of current is Ampere (Amp).

## What is the dimensional formula of electric potential?

Therefore, the electric potential is dimensionally represented as [M1 L2 T3 I1].

## What is the resistance formula?

If you know the total current and the voltage across the whole circuit, you can find the total resistance using Ohm’s Law: R = V / I. For example, a parallel circuit has a voltage of 9 volts and total current of 3 amps. The total resistance RT = 9 volts / 3 amps = 3 Ω.