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

Author Question: A long vertical wire carries a steady 70 A current. As shown in the figure, a pair of horizontal ... (Read 78 times)

Brittanyd9008

  • Hero Member
  • *****
  • Posts: 500

Question 1

A round flat metal coil has 180 turns and negligible resistance. It is connected in a series circuit with a resistor, with nothing else in the circuit. You measure that a current flows through the resistor when a magnetic field through the coil, perpendicular to its area, is changing at What is the radius of the coil?
◦ 0.54 m
◦ 0.25 m
◦ 0.014 m
◦ 0.043 m

Question 2

A long vertical wire carries a steady 70 A current. As shown in the figure, a pair of horizontal rails are 0.20 m apart. A 20-Ω resistor connects points a and b, at the end of the rails. A bar is in contact with the rails, and is moved by an external force with a constant horizontal velocity of 0.90 m/s to the right, as shown. The bar and the rails have negligible resistance. At the instant that the bar is 0.20 m from the wire, what are the induced current in the resistor and its direction through the resistor? (μ0 = 4π × 10-7 T ∙ m/A)



◦ 0.63 μA, from a to b
◦ 0.32 μA, from a to b
◦ 0.32 μA, from b to a
◦ 0.63 μA, from b to a
◦ 1.9 μA, from b to a


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by Brittanyd9008 on Oct 11, 2019

wshriver

  • Sr. Member
  • ****
  • Posts: 318
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 25% of students answer this correctly





 

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

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

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

For a complete list of videos, visit our video library