This topic contains a solution. Click here to go to the answer

Author Question: When a voltage difference is applied to a piece of metal wire, a 5.0-mA current flows through it. ... (Read 116 times)

corkyiscool3328

  • Hero Member
  • *****
  • Posts: 539
When a voltage difference is applied to a piece of metal wire, a 5.0-mA current flows through it.
 
  If this metal wire is now replaced with a silver wire having twice the diameter of the original wire, how much current will flow through the silver wire? The lengths of both wires are the same, and the voltage difference remains unchanged. (The resistivity of the original metal is 1.68  10-8   m, and the resistivity of silver is 1.59  10-8   m.) A) 21 mA
  B) 19 mA
  C) 11 mA
  D) 5.3 mA

Question 2

How much current will be flowing through a 40.0 m length of cylindrical metal wire with radius 0.0 mm if it is connected to a source supplying 16.0 V? The resistivity of this metal is 1.68  10-8   m.
 
  A) 1200 A
  B) 9.5  108 A
  C) 68 nA
  D) 710 A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

elizabethrperez

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

A

Answer to Question 2

A




corkyiscool3328

  • Member
  • Posts: 539
Reply 2 on: Jul 29, 2018
Thanks for the timely response, appreciate it


hramirez205

  • Member
  • Posts: 345
Reply 3 on: Yesterday
Wow, this really help

 

Did you know?

Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

For a complete list of videos, visit our video library