Answer to Question #311505 in Physics for Dumbo

Question

4. The charging battery of a parallel-plate capacitor was disconnected and a dielectric slab is inserted. What happens to the potential difference upon insertion?

a. increase by a factor of K

b. decreases by a factor of K

c. remains the same

d. cannot be determined

5. Which of the following statements is correct about the electric field of a capacitor?

a. Electric field without dielectric is stronger than the field inside the dielectric

b. Electric field without dielectric is weaker than the field inside the dielectric

c. Both a and b

d. neither a nor b

Answer 1

4. Answer: b. decreases by a factor of $\kappa$

5. Answer: a. Electric field without dielectric is stronger than the field inside the dielectric