Consider the charge configuration and a spherical Gaussian surface as shown in the figure. When calculating the flux of the electric field over the spherical surface, the electric field will be caused due to
all the charges
only the +ve charges
As we learnt in
Gauss's Law -
Total flux linked with a closed surface called Gaussian surface.
Formula:
- wherein
No need to be a real physical surface.
Qenc - charge enclosed by closed surface.
When we calculate flux we take only charges inside the Gaussian surface. But the electric field is caused by all the charges present.
Option 1)
This option is incorrect
Option 2)
all the charges
This option is correct
Option 3)
only the +ve charges
This option is incorrect
Option 4)
This option is incorrect