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A plane surface is associated with the area vector A = (2î + 3ĵ) m². If the electric field acting on it is E = 4î V/m, what is the electric flux through the surface?
- 8 V-m
- 12 V-m
- 20 V-m
- zero
Correct answer: 8 V-m
Solution
The electric flux through a surface is calculated by taking the dot product of the electric field vector and the area vector. In this case, the dot product of E = 4î V/m and A = (2î + 3ĵ) m² results in 8 V-m, as only the î components contribute to the flux.
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