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
Correct Answer:

Verified
Correct Answer:
Verified
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