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Author Question: The magnetic field of a long, straight wire has a value B0 at a distance of r0 when the current is ... (Read 114 times)

big1devin

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on: Jul 28, 2018
The magnetic field of a long, straight wire has a value B0 at a distance of r0 when the current is I0. At a distance of 3.00 r0. what current is necessary to produce a field having the same strength B0 at this position?
  1. 1.73 I0
  2. 3.00 I0
  3. 9.00 I0
  4. More information is needed.

Question 2

In a mass spectrometer where ions are fired at a given speed perpendicular to the magnetic field, what would be the ratio r20/r22 of the radii of the paths for singly-ionized neon atoms of masses 20 u and 22 u?
  1.100/121
  2.10/11
  3.11/10
  4.121/100


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ryhom

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Reply #1 on: Jul 28, 2018
Answer to Question 1

2

Answer to Question 2

2


big1devin

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Reply #2 on: Jul 28, 2018
TY


ryhom

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Reply #3 on: Jul 28, 2018
You're welcome


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