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Novosadov [1.4K]

3 years ago

14

What are physical forms in which a substance can exist?

1 answer:

Alecsey [184]3 years ago

8 0

Physical forms are: gas,liquid,and solid

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The cross section of a copper strip is 1.2 mmthick and 20 mm wide. There is a 25-A current through this cross section, with the

Naily [24]

To solve this problem it is necessary to use the concepts related to the Hall Effect and Drift velocity, that is, at the speed that an electron reaches due to a magnetic field.

The drift velocity is given by the equation:

$V_d = \frac{I}{nAq}$

Where

I = current

n = Number of free electrons

A = Cross-Section Area

q = charge of proton

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$I = 25 A$

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$q= 1.6*10^{-19}C$

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$V_d =\frac{25}{(1.2*20 *10^{-6})(1.6*10^{-19})(8.47*10^{19} )}$

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The hall voltage is given by

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d = distance

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$V=\frac{(2.5)(25)}{(8.47*10^{28})(1.6*10^{-19})(1.2*10^{-3})}$

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3 years ago