Need some help. A solenoid is created by winding wire with n turns per unit length around a cylindrical object with length ℓ and cross-sectional area A, as shown. Assume that the solenoid is very long compared to its diameter. (The dimensions in the drawing are not appropriately scaled, and typically the windings are much more densely packed than what is shown.) A) Enter an expression for the magnitude of the magnetic field in the solenoid. B)Enter an expression for the total magnetic flux in the solenoid. C) Enter an expression for the magnitude of the voltage induced by a time-varying current. D)When the changing current in an electronic device induces an EMF in that same device, it has self-inductance, L, which satisfies ℰ = -LdI/dt. Compare this equation to the expression you obtained for the induced voltage and input an expression for the self-inductance of a solenoid.
Need some help. A solenoid is created by winding wire with n turns per unit length around a cylindrical object with length ℓ and cross-sectional area A, as shown. Assume that the solenoid is very long compared to its diameter. (The dimensions in the drawing are not appropriately scaled, and typically the windings are much more densely packed than what is shown.)
A) Enter an expression for the magnitude of the magnetic field in the solenoid.
B)Enter an expression for the total magnetic flux in the solenoid.
C) Enter an expression for the magnitude of the voltage induced by a time-varying current.
D)When the changing current in an electronic device induces an EMF in that same device, it has self-inductance, L, which satisfies ℰ = -LdI/dt. Compare this equation to the expression you obtained for the induced voltage and input an expression for the self-inductance of a solenoid.
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