A Square Coil of Wire with Side 8

question 29

Multiple Choice

A square coil of wire with side 8.0 cm and 50 turns sits in a uniform magnetic field that is perpendicular to the plane of the coil. The coil is pulled quickly out of the magnetic field in 0.2 s. If the resistance of the coil is 15 ohm and a current of 12 mA is induced in the coil, calculate the value of the magnetic field.

• A) 5.6 T
• B) 0.11 T
• C) 7.5 × 10^-3 T
• D) 1.4 T
• E) 9.1 T

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