A Wire of Radius 0

question 26

Multiple Choice

A wire of radius 0.6 cm carries a current of 10 A that is uniformly distributed over its cross section.Calculate the magnetic field strength at r = 0.3 cm divided by that at r = 0.9 cm.

• A)1.0
• B)0.75
• C)0.50
• D)2.0
• E)3.0

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