Author Question: A vertical wire carries a current straight down. To the east of this wire, the magnetic field points ... (Read 111 times)

cdr_15

  • Hero Member
  • *****
  • Posts: 546
A vertical wire carries a current straight down. To the east of this wire, the magnetic field points
 
  A)
 
  north.
  B)
 
  east.
  C)
 
  west.
  D)
 
  south.
  E)
 
  down.

Question 2

The windings of a motor have a resistance of 4.0 . The counter emf of this motor when connected to a 120-V line and running at full speed is 104 V.
 
  (a) What is the start up current of this motor? (b) What is the current in the motor when running at full speed?



cswans24

  • Sr. Member
  • ****
  • Posts: 317
Answer to Question 1

D

Answer to Question 2

(a) 30 A
(b) 4 A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

Everyone has one nostril that is larger than the other.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

For a complete list of videos, visit our video library