# Which one of the following is a unit of electric field?

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## What unit is electric field measured in?

In the metre-kilogram-second and SI systems, the appropriate units are newtons per coulomb, equivalent to volts per metre. In the centimetre-gram-second system, the electric field is expressed in units of dynes per electrostatic unit (esu), equivalent to statvolts per centimetre.

## Which of the following is not a unit of electric field?

From the above equation, the unit of force is newton (\$N\$) and the unit of charge is coulomb (\$C\$). Therefore, the unit of electric field will be \$dfrac{N}{C}=N{{C}^{ -1}}\$. Therefore, the unit which is not a unit of electric field is \$J,{{C}^{ -1}}\$. Hence, the correct option is (B).

## What is electric field 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.

## Is J cm unit of electric field?

But a “Joule per Coulomb” (J/C) is also known as a volt (V), and the electric potential is thus often referred to as the voltage. The electric field can therefore also be quoted in units of volts per meter, since V/m = N/C.

Units for electric potential and fields.

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Electric field V/m N/C
Force CV/m N
Potential Energy CV J

## 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.

## What is SI unit of mobility?

The SI unit of velocity is m/s, and the SI unit of electric field is V/m. Therefore the SI unit of mobility is (m/s)/(V/m) = m2/(V⋅s).