Multiple Choice
A long straight wire carries a current of 40 A in a region where a uniform external magnetic field has a 30-μT magnitude and is parallel to the current. What is the magnitude of the resultant magnetic field at a point that is 20 cm from the wire?
A) 70 μT
B) 40 μT
C) 10 μT
D) 50 μT
E) 36 μT
Correct Answer:
Verified
Correct Answer:
Verified
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