Induced Electric Fields: for a Long Ideal Solenoid Having a Circular

question 45

Multiple Choice

Induced electric fields: For a long ideal solenoid having a circular cross-section, the magnetic field strength within the solenoid is given by the equation B(t) = 5.0t T, where t is time in seconds. If the induced electric field outside the solenoid is 1.1 V/m at a distance of 2.0 m from the axis of the solenoid, find the radius of the solenoid.

• A) 0.30 m
• B) 77 m
• C) 0.94 m
• D) 9.0 m

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