Two 1.60cm×1.60cm plates that form a parallel-plate capacitor are charged to ± 0.711nC . What is the potential difference across the capacitor if the spacing between the plates is 1.20mm What is the potential difference across the capacitor if the spacing between the plates is 2.40mm ?

Question

unklerhaukus · Answer

can you work out  the surface charge density ?

unklerhaukus · Answer

$$\sigma = Q/A$$

unklerhaukus · Answer

Then the electric field between the plates

$$E=\sigma/\varepsilon_0$$

unklerhaukus · Answer

The potential difference between the plates will be $$\Delta V=Ed$$