A parallel-plate capacitor has closely spaced circular plates of radius R = 2.00 cm. Charge is...

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A parallel-plate capacitor has closely spaced circular plates of radius R = 2.00 cm. Charge is...

A parallel-plate capacitor has closely spaced circular plates of radius R = 2.00 cm. Charge is flowing onto the positive plate at the rate I = dQ/dt = 2.72 A. The magnetic field at a distance r = 2.00 cm from the axis of the plates is approximately

A. 136 mT
	B. 272 mT
	C. 16.5 mT
	D. 457 mT

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Answer 1

Answer #1

magnetic field , B = mu*I/2pir = 2x10^-7 *(2.72)/{2x10^-2} = 2.72 x 10^-5 T

B = 272 x 10^-3 T = 272 mT

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Answer 2

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