Author Question: An air-filled parallel-plate capacitor is connected to a battery and allowed to charge up. Now a ... (Read 109 times)

Tazate

  • Hero Member
  • *****
  • Posts: 532
An air-filled parallel-plate capacitor is connected to a battery and allowed to charge up. Now a slab of dielectric material is placed between the plates of the capacitor while the capacitor is still connected to the battery.
 
  After this is done, we find that
  A) the energy stored in the capacitor had decreased.
  B) the voltage across the capacitor had increased.
  C) the charge on the capacitor had increased.
  D) the charge on the capacitor had not changed.
  E) None of these choices is true.

Question 2

If the electric potential in a region is given by V(x) = 6/x2, the x component of the electric field in that region is
 
  A) -12x-3.
  B) -6x.
  C) 12x-3.
  D) 12x.
  E) 6x.



dlook33

  • Sr. Member
  • ****
  • Posts: 344
Answer to Question 1

Answer: C

Answer to Question 2

Answer: C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Tazate

  • Hero Member
  • *****
  • Posts: 532
Both answers were spot on, thank you once again



dlook33

  • Sr. Member
  • ****
  • Posts: 344

 

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

For a complete list of videos, visit our video library