Consider the charge configuration of 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 due to:
Correct answer: C. All the charges
- A. q2
- B. Only the positive charges
- C. All the charges
- D. +q1 and -q1
Explanation
At any point over the spherical Gaussian surface, the net electric field is the vector sum of electric fields due to +q1,-q and q2.Don't confuse this with the electric flux which is zero (net) passing over the Gaussian surface as the net charge enclosing the surface is zero.
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Electrostatics describes forces between charges through Coulomb's law, electric fields and field intensity, then uses electric potential to measure energy per unit charge. Capacitors store charge and electrical energy, with capacitance depending on geometry and dielectric material, not simply on the amount of charge present.
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