Two vertical conducting plates X and Y are arranged with a separation of $6.0\,\text{mm}$ in air. A $60\,\text{V}$ d.c. supply is connected as shown. What is the electric field strength at E, which is halfway between the plates?
- A$1.0 \times 10^{4}\,\text{V m}^{-1}$ towards X
- B$1.0 \times 10^{4}\,\text{V m}^{-1}$ towards Y
- C$2.0 \times 10^{4}\,\text{V m}^{-1}$ towards X
- D$2.0 \times 10^{4}\,\text{V m}^{-1}$ towards Y