Question resistivity measurements on the leaves of corn, Ask an Expert

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Question: Resistivity measurements on the leaves of corn plants are a good way to assess stress and overall health. The leaf of a corn plant has a resistance of 2.3 MÎ© measured between two electrodes placed 20 cm apart along the leaf. The leaf has a width of 2.9 cm and is 0.20 mm thick.

Part A: What is the resistivity of the leaf tissue? Express your answer to two significant figures and include the appropriate units.
Ï = ________

Part B: Is this greater than or less than the resistivity of muscle tissue in the human body?

(A) greater or

(B) less

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Category:- Physics
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