A Parallel-Plate Capacitor Has Closely Spaced Circular Plates of Radius $\mu$

question 31

Multiple Choice

A parallel-plate capacitor has closely spaced circular plates of radius R = 3.00 cm.Charge is flowing onto the positive plate at the rate I = dQ/dt = 3.65 A.The magnetic field at a distance r = 1.50 cm from the axis of the plates is approximately

• A)135 mT
• B)256 \(\mu\)T
• C)1.35 \(\mu\)T
• D)457 mT
• E)88.3 \(\mu\)T

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