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Ivan
3 years ago
12

Which definition best fits the idea of electrical resistance in a wire? A. the decrease in current flow due to electrons collidi

ng with metal atoms B. the electrical current induced by a spinning magnet inside of a coil C. the continuous flow of electrons through a conducting material D. the energy that pushes and pulls electrons through a circuit
Engineering
1 answer:
Tom [10]3 years ago
8 0

Answer:

A. the decrease in current flow due to electrons colliding with metal atoms

Explanation:

An electric current flows when electrons move through a conductor, such as a metal wire. The moving electrons can collide with the ions in the metal. This makes it more difficult for the current to flow, and causes resistance.

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Answer:

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Explanation:

See attached workings

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t is desired to produce aligned carbon fiber-epoxy matric composite having a longitudinal tensile strength of 800 MPa. Given (a)
Nesterboy [21]

Answer:

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Explanation:

Given data

\sigma_{T} =  800 M pa

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(b).Since this  critical length is greater than fiber length Than the volume fraction of fibers is given by

V_{f} = \frac{\sigma_T - \sigma_m}{\frac{L\sigma_c}{D} - \sigma_m }

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V_{f} = \frac{800-18}{\frac{(2.3)(13.5)}{0.017} - 18 }

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3 years ago
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electromagnets require power to operate

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3 years ago
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