A Long Wire Carries a Current of 3 $\mu$ T
B)64 $\mu$

question 60

Multiple Choice

A long wire carries a current of 3.0 A along the axis of a long solenoid (radius = 3.0 cm,n = 900 turns/m,current = 30 mA) .What is the magnitude of the magnetic field at a point 2.0 cm from the axis of the solenoid? Neglect any end effects.

• A)34 \(\mu\)T
• B)64 \(\mu\)T
• C)30 \(\mu\)T
• D)45 \(\mu\)T
• E)4.0 \(\mu\)T

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