Faraday's Law: a Circular Coil of Radius 5

question 22

Multiple Choice

Faraday's law: A circular coil of radius 5.0 cm and resistance 0.20 Ω is placed in a uniform magnetic field perpendicular to the plane of the coil. The magnitude of the field changes with time according to B = 0.50e^-20t T. What is the magnitude of the current induced in the coil at the time t = 2.0 s?

• A) 1.3 mA
• B) 9.2 mA
• C) 7.5 mA
• D) 4.2 mA
• E) 2.6 mA

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