Bobbie Comstock

2022-01-02

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 2.0 MΩ measured between two electrodes placed 20 cm apart along the leaf. The leaf has a width of 2.5 cm and is 0.20 mm thick. What is the resistivity of the leaf tissue? Is this greater than or less than the resistivity of muscle tissue in the human body?

Lindsey Gamble

Beginner2022-01-03Added 38 answers

Given:

Resistance,$R=2$ M

Length,$L=20cm=0.2m$

Area,$A=2.5$ cm by $0.02\text{}cm=0.05\text{}c{m}^{2}$

Let the resistivity is$\rho$

$R=\rho \frac{L}{A}$

$\rho =\frac{(2\times {10}^{6})(0.05\times {10}^{-4})}{0.2}$

$\rho =50$ Om

The resistivity of human muscle is less this value.

Resistance,

Length,

Area,

Let the resistivity is

The resistivity of human muscle is less this value.

22+64

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