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Question
An inventor wants to generate 120-V power by moving a 1.00-m-long wire perpendicular to the Earth’s $5.00 \times 10^{-5} \textrm{ T}$ field. (a) Find the speed with which the wire must move. (b) What is unreasonable about this result? (c) Which assumption is responsible?
1. $2.4 \times 10^6 \textrm{ m/s}$
2. $v$ is mach 7000, which is very unreasonably high.
3. The high voltage from only a single wire in such a small magnetic field is unrealistic.
Solution Video