Why can't cars be constructed that can magnetically levitate in Earth's magnetic field?

a. The current needed would be excessive.
b. The current within the car must flow in a complete circuit, about half Of which would exert forces against levitation.
c. Magnetic forces are always very weak.
d. Earth's magnetic field is in the wrong direction.

Question

02-08-2021
Physics

Answered

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Why can't cars be constructed that can magnetically levitate in Earth's magnetic field?

a. The current needed would be excessive.
b. The current within the car must flow in a complete circuit, about half Of which would exert forces against levitation.
c. Magnetic forces are always very weak.
d. Earth's magnetic field is in the wrong direction.

Sagot :

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