Suppose the light bulb in the figure below is replaced with a short wire of zero resistance, and the resistance of the rails is negligible. The only resistance is from the moving rod, which is iron (resistivity =9.50\times10^{-8} ohm.m). The rod has a cross-sectional area of 3.50\times10^{-6}m

Suppose the light bulb in the figure below is replaced with a short wire of zero resistance, and the resistance of the rails is negligible. The only resistance is from the moving rod, which is iron (resistivity =9.50\times10^{-8} ohm.m). The rod has a cross-sectional area of 3.50\times10^{-6}m

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asked 2021-04-26
Suppose the light bulb in the figure below is replaced with a short wire of zero resistance, and the resistance of the rails is negligible. The only resistance is from the moving rod, which is iron (resistivity \(\displaystyle={9.50}\times{10}^{{-{8}}}\) ohm.m). The rod has a cross-sectional area of \(\displaystyle{3.50}\times{10}^{{-{6}}}\)m

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2021-04-28
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