A 5-Turn Square Loop (10 Cm Along a Side, Resistance

question 7

Multiple Choice

A 5-turn square loop (10 cm along a side, resistance = 4.0 Ω) is placed in a magnetic field that makes an angle of 30° with the plane of the loop. The magnitude of this field varies with time according to B = 0.50t², where t is measured in s and B in T. What is the induced current in the coil at t = 4.0 s?

• A) 25 mA
• B) 5.0 mA
• C) 13 mA
• D) 43 mA
• E) 50 mA

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