Item 2 ? 2of13 onstants Part A A wire carries a current of 12 A Use the data fro

Question

Item 2 ? 2of13 onstants Part A A wire carries a current of 12 A Use the data from table to determine at what approximate distance from the wire the magnetic field strength would equal that of a refrigerator magnet. Field source and location Field strength (T) 10 cm from a wire with 1 A current Surface of the earth 1 cm from a wire with 10 A current Express your answer to two significant figures and include the appropriate units 2x 10-6 5x 10-5 2x 10 5× 10 -4 Refrigerator magnet Value Units 100-turn coil, 1 cm diameter, with 1 A current 1x 102 Submit Request Answer Surface of the sun, in a sunspot Near a rare-earth magnet MRI solenoid 1x 10-1 Provide Feedback Next >

Explanation / Answer

2 x 10-4 T magnetic field at distance = 1 cm

5 x 10-3 T magnetic field would be at distance = (1/(2 x 10-4 )) (5 x 10-3 ) = 25 cm

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