![SearchIcon](https://vmkt.vedantu.com/vmkt/PROD/png/bdcdbbd8-08a7-4688-98e6-4aa54e5e0800-1733305962725-4102606384256179.png)
What are the field forces in Physics?
Answer
412.5k+ views
Hint: To answer our question, we will first understand what does a field mean. In Physics, the field is a region (of attraction or repulsion) inside which each point is affected by a force due to which the field is created. The effect of this force is measured by field lines. The region with more field lines has stronger force and the region with lesser field lines has a weaker force in the region.
Complete answer:
A field force is described with the help of a vector quantity which determines the magnitude and direction of this force in the field at any point. All the field forces are non-contact in nature. There are two fundamental field forces in nature, the Gravitational force and the Electromagnetic force. Let us look at them in details as follows:
(2) Gravitational force: it is one of the four fundamental forces in nature and exists between any two bodies in the universe that have mass. Gravitational force is only attractive in nature. The force on a test mass ‘m’ due to the gravitational field of a mass ‘M’ is given by:
$\Rightarrow \overrightarrow{F}=G\dfrac{Mm}{{{r}^{2}}}\widehat{n}$
Where,
‘r’ is the distance between the masses and ‘$\widehat{n}$’ is the unit vector along the direction of force.
(2) Electric force: it is one of the four fundamental forces in nature and is one of the ‘electromagnetic’ forces. It exists between any two bodies in the universe that have charge. Electric force is both attracting and repelling in nature. The force on a test charge ‘q’ due to the electric field of a charge ‘Q’ is given by:
$\Rightarrow \overrightarrow{F}=k\dfrac{Qq}{{{r}^{2}}}\widehat{n}$
Where,
‘r’ is the distance between the masses and ‘$\widehat{n}$’ is the unit vector along the direction of force.
Hence, the two field forces in Physics are Gravitational force and electric force.
Note:
Magnetic force might also be considered as a field force depending upon the nature of the force. Magnetic field produces a force which affects moving charges within its area of influence but does not affect stationary charges. This is why it cannot be completely said to be a field force.
Complete answer:
A field force is described with the help of a vector quantity which determines the magnitude and direction of this force in the field at any point. All the field forces are non-contact in nature. There are two fundamental field forces in nature, the Gravitational force and the Electromagnetic force. Let us look at them in details as follows:
(2) Gravitational force: it is one of the four fundamental forces in nature and exists between any two bodies in the universe that have mass. Gravitational force is only attractive in nature. The force on a test mass ‘m’ due to the gravitational field of a mass ‘M’ is given by:
$\Rightarrow \overrightarrow{F}=G\dfrac{Mm}{{{r}^{2}}}\widehat{n}$
Where,
‘r’ is the distance between the masses and ‘$\widehat{n}$’ is the unit vector along the direction of force.
(2) Electric force: it is one of the four fundamental forces in nature and is one of the ‘electromagnetic’ forces. It exists between any two bodies in the universe that have charge. Electric force is both attracting and repelling in nature. The force on a test charge ‘q’ due to the electric field of a charge ‘Q’ is given by:
$\Rightarrow \overrightarrow{F}=k\dfrac{Qq}{{{r}^{2}}}\widehat{n}$
Where,
‘r’ is the distance between the masses and ‘$\widehat{n}$’ is the unit vector along the direction of force.
Hence, the two field forces in Physics are Gravitational force and electric force.
Note:
Magnetic force might also be considered as a field force depending upon the nature of the force. Magnetic field produces a force which affects moving charges within its area of influence but does not affect stationary charges. This is why it cannot be completely said to be a field force.
Recently Updated Pages
A uniform rod of length l and mass m is free to rotate class 10 physics CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Solve the following pairs of linear equations by elimination class 10 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
What could be the possible ones digits of the square class 10 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Where was the Great Bath found A Harappa B Mohenjodaro class 10 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
PQ is a tangent to a circle with centre O at the point class 10 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
The measures of two adjacent sides of a parallelogram class 10 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Trending doubts
Imagine that you have the opportunity to interview class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Find the area of the minor segment of a circle of radius class 10 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Fill the blanks with proper collective nouns 1 A of class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Frogs can live both on land and in water name the adaptations class 10 biology CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Fill in the blank One of the students absent yesterday class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Write a letter to the Principal of your school requesting class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)