Induced Magnetic Field in a Capacitor
For a discharging parallel-plate capacitor, the rate of change of the electric field between the plates is given by dE/dt = -E₀ω cos(ωt). What is the magnitude of the induced magnetic field at a distance r from the central axis, where r is less than the radius of the plates?
A
B = (μ₀ε₀E₀ω sin(ωt)r)/2
B
B = (μ₀ε₀E₀ω cos(ωt))/(2r)
C
B = (μ₀ε₀E₀ω cos(ωt)r²)/2
D
B = (μ₀ε₀E₀ω cos(ωt)r)/2
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