Question

For a full dielectric slab filling the gap, how does the potential difference change?

Options

• \[V=\frac{K}{V_0}\]

• \[V=V_0-K\]

• \[V=KV_0\]

• \[V=\frac{V_0}{K}\]

Answer 1

The slab fills the gap, so the separation remains \[d\] and \[V=Ed\]. Because the field is reduced by a factor of \[K\], the potential difference is also reduced by that factor.