1. Tentative Equation sheet for Friday’s exam

2. By superposition, the field in the dielectric is the sum of the original capacitor field, plus the field from the polarization surface charge. The total field is therefore A] bigger than the original capacitor field B] smaller than the original capacitor field C] the same as the original capacitor field

3. Answer: smaller than the original field. We can write that the new field is the original field, divided by K, the “dielectric constant” What is the new potential across the capacitor? A] same as the old potential, without the dielectric B] bigger than the old potential, by a factor of K C] smaller than the old potential, by a factor of K