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Author Question: How much current must pass through a 400-turn ideal solenoid that is 4.0 cm long to generate a 1.0-T ... (Read 34 times)

lb_gilbert

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on: Jul 29, 2018
How much current must pass through a 400-turn ideal solenoid that is 4.0 cm long to generate a 1.0-T magnetic field at the center? (0 = 4  10-7 T  m/A)
 
  A) 80 A B) 22 A C) 13 A D) 0.013 A E) 40 A

Question 2

A 400-W computer (including its monitor) is turned on for 8.0 hours per day. If electricity costs 10 per kWh, how much does it cost to run the computer annually for a 365-day year?
 
  A) 120
  B) 1200
  C) 15
  D) 150


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dajones82

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Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

A


lb_gilbert

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Reply 2 on: Jul 29, 2018
Gracias!

alvinum

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Reply 3 on: Yesterday
Wow, this really help

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