A cylindrical copper wire of radius 0.5 millimetres carries current i from left to right while placed in a 0.10 T magnetic field that points into the screen/page. What must the value of this current i be if the weight of the wire balances the upward magnetic force on the wire? THIS IS MAGNETIC LEVITATION - THE WIRE WILL FLOAT IN MID-AIR - NO MAGIC JUST PHYSICS AT WORK! HINT: The density of copper is 8920 kilograms per cubic meter. а. 2.2 A O b. 1.4 × 10³ A С. 0.22 A d. 0.69 A е. 6.9 A

Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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A cylindrical copper wire of radius 0.5 millimetres
carries current i from left to right while placed in a
0.10 T magnetic field that points into the screen/page.
What must the value of this current i be if the weight
of the wire balances the upward magnetic force on
the wire? THIS IS MAGNETIC LEVITATION - THE WIRE
WILL FLOAT IN MID-AIR - NO MAGIC JUST PHYSICS
AT WORK! HINT: The density of copper is 8920
kilograms per cubic meter.
а.
2.2 A
O b. 1.4 × 10³ A
С.
0.22 A
d. 0.69 A
е.
6.9 A
Transcribed Image Text:A cylindrical copper wire of radius 0.5 millimetres carries current i from left to right while placed in a 0.10 T magnetic field that points into the screen/page. What must the value of this current i be if the weight of the wire balances the upward magnetic force on the wire? THIS IS MAGNETIC LEVITATION - THE WIRE WILL FLOAT IN MID-AIR - NO MAGIC JUST PHYSICS AT WORK! HINT: The density of copper is 8920 kilograms per cubic meter. а. 2.2 A O b. 1.4 × 10³ A С. 0.22 A d. 0.69 A е. 6.9 A
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