A Long Solenoid Has a Radius of 2

question 10

Multiple Choice

A long solenoid has a radius of 2.0 cm and has 700 turns/m. If the current in the solenoid is decreasing at the rate of 8.0 A/s, what is the magnitude of the induced electric field at a point 2.5 cm from the axis of the solenoid?

• A) 56 μV/m
• B) 8.8 μV/m
• C) 88 μV/m
• D) 69 μV/m
• E) 44 μV/m

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