Superconductors Can Carry Very Large Currents with No Resistance $\pi$ *10 Sup>- ⁷ T

question 54

Multiple Choice

Superconductors can carry very large currents with no resistance. If a superconducting wire is formed into a solenoid of length 50.0 cm with 250 turns, what is the magnetic field inside the solenoid when the current is 10⁴ A? (µ₀ = 4 $\pi$ *10 sup>- ⁷ T.m/A)

• A) 12.6 T
• B) 2.50 T
• C) 1.25 T
• D) 6.28 T

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