MCQ
Two parallel plates have equal and opposite charge. When the space between them is evacuated, the electric field between the plates is $2 \times 10^5 V / m$. When the space is filled with dielectric, the electric field becomes $1 \times 10^5 V / m$. The dielectric constant of the dielectric material
- A$1/2$
- B$1$
- ✓$2$
- D$3$
