APFIVE Induced EMF in a Coil Inside a Solenoid
A solenoid with n turns per unit length carries a current that increases linearly with time according to I = αt, where α is a constant. A small circular coil with N turns and radius r is placed inside the solenoid with its axis aligned with the solenoid’s axis. What is the magnitude of the induced emf in the small coil?
A
μ₀πr²Nnα/t
B
μ₀πr²Nnα
C
μ₀πr²Nnαt
D
μ₀πr²N²nα
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