This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: When a voltage difference is applied to a piece of metal wire, a 5.0-mA current flows through it. ... (Read 77 times)

corkyiscool3328

  • Hero Member
  • *****
  • Posts: 539
on: Jul 29, 2018
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
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

A


corkyiscool3328

  • Member
  • Posts: 539
Reply 2 on: Jul 29, 2018
YES! Correct, THANKS for helping me on my review

amandalm

  • Member
  • Posts: 306
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Rosalind Franklin and X-ray diffraction applied to DNA wet fibres Rosalind Franklin and X-ray diffraction applied to DNA wet fibres
Past and current ranges of the grizzly bear. Past and current ranges of the grizzly bear.
A variable valve timing solenoid being controlled by applying voltage from the PCM. A variable valve timing solenoid being controlled by applying voltage from the PCM.
The slight (5 microsecond) difference in the firing of the companion cylinders is enough time to ... The slight (5 microsecond) difference in the firing of the companion cylinders is enough time to ...
A flat circular coil having 57 turns of very thin wire has a diameter of 9.5 cm and carries 7.2 ... A flat circular coil having 57 turns of very thin wire has a diameter of 9.5 cm and carries 7.2 ...
Seven students have applied for merit scholarships. This year 3 merit scholarships were ... Seven students have applied for merit scholarships. This year 3 merit scholarships were ...
Video: The Vestibular System

For a complete list of videos, visit our video library