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Question Number 99985 by Rio Michael last updated on 24/Jun/20

$$\mathrm{A}\mathrm{certain}\mathrm{wire}\mathrm{has}\mathrm{length}4.5\mathrm{cm}\mathrm{and}\mathrm{mass}12.3\mathrm{g},\mathrm{with}\mathrm{an}$$$$\mathrm{electrical}\mathrm{resistance}\mathrm{of}1.1\mathrm{m}\mathrm{\Omega }.\mathrm{this}\mathrm{wire}\mathrm{falls}\mathrm{through}\mathrm{a}\mathrm{horizontal}$$$$\mathrm{magnetic}\mathrm{field}\mathrm{with}\mathrm{flux}\mathrm{density}\mathrm{of}0.35\mathrm{T}.\mathrm{As}\mathrm{his}\mathrm{wire}\mathrm{falls}\mathrm{its}\mathrm{ends}$$$$\mathrm{slide}\mathrm{smoothly}\mathrm{between}\mathrm{two}\mathrm{rails}\mathrm{connected}\mathrm{by}\mathrm{a}\mathrm{wire}\mathrm{with}\mathrm{negligible}$$$$\mathrm{internal}\mathrm{resistance}.\mathrm{Calculate}\mathrm{the}\mathrm{magnitude}\mathrm{of}\mathrm{the}\mathrm{terminal}\mathrm{energy}$$$$\mathrm{resistance},\mathrm{neglecting}\mathrm{the}\mathrm{resistance}\mathrm{of}\mathrm{the}\mathrm{rails}.$$

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