What is the net flux of the uniform electric field of the above question through a cube of side 20 cm oriented so that its faces are parallel to the coordinate planes?

Explanation

To find the net electric flux through a cube of side 20 cm in a uniform electric field, we can follow these steps:

### Step 1: Understand the Electric Flux Concept
Electric flux (Φ) through a surface is defined as the product of the electric field (E) and the area (A) of the surface projected in the direction of the field. Mathematically, it is given by:
\[ Φ = E \cdot A = E \cdot A \cdot \cos(\theta) \]
where θ is the angle between the electric field and the normal to the surface.
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