What emf is induced in the ring as the field changes

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Reference no: EM132100911

Question: 1) A low-power college radio station broadcasts 10 Wof electromagnetic waves.

At what distance from the antenna is the electric field amplitude 2.0Ã-10âˆ'3V/m, the lower limit at which good reception is possible?

Express your answer to two significant figures and include the appropriate units.

2) A TMS (transcranial magnetic stimulation) device creates very rapidly changing magnetic fields. The field near a typical pulsed-field machine rises from0 T to 2.5 T in 200 Î¼s. Suppose a technician holds his hand near the device so that the axis of his 2.1-cm-diameter wedding band is parallel to the field.

Part A

What emf is induced in the ring as the field changes?

Express your answer to two significant figures and include the appropriate units.

Part B

If the band is made of a gold alloy with resistivity 6.2Ã-10âˆ'8Î©â‹...m and has a cross-section area4.5 mm2 , what is the induced current?

Express your answer to two significant figures and include the appropriate units.

Reference no: EM132100911

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