« previous next »

Author Question: When a capacitor has a charge of magnitude 80 mC on each plate the potential difference across the ... (Read 73 times)

audragclark

  • Hero Member
  • *****
  • Posts: 579
on: Jul 28, 2018
When a capacitor has a charge of magnitude 80 mC on each plate the potential difference across the plates is 16 V. How much energy is stored in this capacitor when the potential difference across its plates is 42 V?
 a. 1.0 mJ
  b. 4.4 mJ
  c. 3.2 mJ
  d. 1.4 mJ
  e. 1.7 mJ

Question 2

A 4.0-mF capacitor initially charged to 50 V and a 6.0-mF capacitor charged to 30 V are connected to each other with the positive plate of each connected to the negative plate of the other. What is the final charge on the 6.0-mF capacitor?
 a. 20 mC
  b. 8.0 mC
  c. 10 mC
  d. 12 mC
  e. 230 mC
Physics ¦ Walker ¦ 5th Edition
Buy Test-Bank


irishcancer18

  • Sr. Member
  • ****
  • Posts: 310
Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

Approximately 25% of all reported medication errors result from some kind of name confusion.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Phases of the myocardial action potential. Ion movements during each phase are shown. Phases of the myocardial action potential. Ion movements during each phase are shown.
A typical TP sensor mounted on the throttle plate of this port-injected engine. A typical TP sensor mounted on the throttle plate of this port-injected engine.
Synaptic transmission. (a) Action potential reaches synapse; (b) neurotransmitter released synaptic ... Synaptic transmission. (a) Action potential reaches synapse; (b) neurotransmitter released synaptic ...
Sensitivity study for facial difference Sensitivity study for facial difference
Solve Diophantus’s Problem B–8: To find two numbers such that their difference a Solve Diophantus’s Problem B–8: To find two numbers such that their difference a
In 2000, the average charge of tax preparation was 95 . Assuming a normal distribution and a ... In 2000, the average charge of tax preparation was 95 . Assuming a normal distribution and a ...
Video: Introduction to Heart Attacks

For a complete list of videos, visit our video library