What is the SI unit of electric field strength?
2 Answers
The SI unit of electric field strength is the volt per meter (V/m).
Electric field strength measures how strong the electric field is at a particular point in space. It is defined as the force per unit charge experienced by a positive test charge placed at that point. In formula terms, the electric field \( E \) is given by:
\[ E = \frac{F}{q} \]
where \( F \) is the force exerted on the charge \( q \).
In terms of units, the electric field strength is expressed in volts per meter (V/m). This unit comes from the fact that:
1. A volt (V) is defined as the amount of electric potential difference between two points when one joule of energy is used to move one coulomb of charge between them.
2. A meter (m) is the unit of distance.
So, when you say an electric field strength is, for example, 100 V/m, it means that there is a potential difference of 100 volts for every meter of distance in that field.
To summarize:
- **Electric field strength**: Measures the force per unit charge at a point.
- **SI unit**: Volt per meter (V/m).
Electric field strength measures how strong the electric field is at a particular point in space. It is defined as the force per unit charge experienced by a positive test charge placed at that point. In formula terms, the electric field \( E \) is given by:
\[ E = \frac{F}{q} \]
where \( F \) is the force exerted on the charge \( q \).
In terms of units, the electric field strength is expressed in volts per meter (V/m). This unit comes from the fact that:
1. A volt (V) is defined as the amount of electric potential difference between two points when one joule of energy is used to move one coulomb of charge between them.
2. A meter (m) is the unit of distance.
So, when you say an electric field strength is, for example, 100 V/m, it means that there is a potential difference of 100 volts for every meter of distance in that field.
To summarize:
- **Electric field strength**: Measures the force per unit charge at a point.
- **SI unit**: Volt per meter (V/m).
The SI unit of electric field strength is the **volt per meter (V/m)**.
Electric field strength (or electric field intensity) describes the force exerted per unit charge at a specific point in the field. It can be mathematically expressed as:
\[ E = \frac{F}{q} \]
where \( E \) is the electric field strength, \( F \) is the force experienced by the charge \( q \).
In terms of units, this is:
\[ \text{Electric Field Strength} = \frac{\text{Force}}{\text{Charge}} \]
The unit of force in the SI system is the newton (N), and the unit of electric charge is the coulomb (C). Therefore, the unit of electric field strength is:
\[ \text{Electric Field Strength} = \frac{\text{N}}{\text{C}} \]
Since 1 volt (V) is equivalent to 1 joule per coulomb (J/C), and 1 joule is 1 newton meter (N·m), this simplifies to:
\[ 1 \text{ V/m} = 1 \frac{\text{N}}{\text{C}} \]
So, the electric field strength is measured in volts per meter (V/m).
Electric field strength (or electric field intensity) describes the force exerted per unit charge at a specific point in the field. It can be mathematically expressed as:
\[ E = \frac{F}{q} \]
where \( E \) is the electric field strength, \( F \) is the force experienced by the charge \( q \).
In terms of units, this is:
\[ \text{Electric Field Strength} = \frac{\text{Force}}{\text{Charge}} \]
The unit of force in the SI system is the newton (N), and the unit of electric charge is the coulomb (C). Therefore, the unit of electric field strength is:
\[ \text{Electric Field Strength} = \frac{\text{N}}{\text{C}} \]
Since 1 volt (V) is equivalent to 1 joule per coulomb (J/C), and 1 joule is 1 newton meter (N·m), this simplifies to:
\[ 1 \text{ V/m} = 1 \frac{\text{N}}{\text{C}} \]
So, the electric field strength is measured in volts per meter (V/m).