Physics · Electrostatic Potential

A conductor and a dielectric slab are placed separately in a uniform external electric field \( \mathbf{E}_0 \). If \( \mathbf{E}_{\text{in}} \) represents the induced electric field inside each material, the net electric field inside them satisfies:

1. A
   \( \mathbf{E}_0 + \mathbf{E}_{\text{in}} = 0 \) for both conductor and dielectric
2. B
   \( \mathbf{E}_0 + \mathbf{E}_{\text{in}} \neq 0 \) for conductor, but \( \mathbf{E}_0 + \mathbf{E}_{\text{in}} = 0 \) for dielectric
3. C
   \( \mathbf{E}_0 + \mathbf{E}_{\text{in}} \neq 0 \) for both conductor and dielectric
4. D
   \( \mathbf{E}_0 + \mathbf{E}_{\text{in}} = 0 \) for conductor, but \( \mathbf{E}_0 + \mathbf{E}_{\text{in}} \neq 0 \) for dielectric