A Toroid Has 200 Turns of Wire with a Current $\times$

question 85

Multiple Choice

A toroid has 200 turns of wire with a current of 3 A passing through the wire.The inner radius of the toroid is 3 cm and the outer radius is 5 cm.Calculate the magnetic field strength at a radius of 2 cm.

• A)6.0 \(\times\) 10^-3 T
• B)3.0 \(\times\) 10^-3 T
• C)1.2 \(\times\) 10^-2 T
• D)4.8 \(\times\) 10^-4 T
• E)none of the above

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