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Gravitational flux is a measure of the amount of gravitational field passing through a given area, just as electric flux is a measure of the amount of electric field passing through a given area. It is similar to electric flux in that it is a measure of the strength of the field at a point, and is calculated by taking the dot product of the field vector and the area vector.
However, gravitational flux differs from the electric flux in a few key ways.
- Firstly, while electric fields can be both positive and negative, gravitational fields are always attractive, meaning that they are always directed towards the source of the field.
- This means that the gravitational flux through a closed surface is always negative, while the electric flux can be either positive or negative.
- Another key difference is that while electric fields are generated by charges, gravitational fields are generated by masses.
- This means that the gravitational flux through a given area is dependent on the mass of the object generating the field, as well as the distance between the object and the area.
Gravitational Flux = \(\overrightarrow{g}.\overrightarrow{A}\)
Electric flux = \(\overrightarrow{E}.\overrightarrow{A}\)
Magnetic flux = \(\overrightarrow{B}.\overrightarrow{A}\)
Both gravitational flux and electric flux have similar formulas. They are measures of the strength of a field passing through a given area. Gravitational flux is always negative and depends on the mass of the object generating the field. The electric flux can be positive or negative and depends on the charges generating the field.
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