Science, asked by jagaicwai, 4 months ago

from where does an electric current flow in a closed circuit how does the current flow​

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Answers

Answered by patellabhuben664
1

Answer:

Why does current flow only in closed circuits?

Wayne Lindgren

Answered 2 years ago

Current is charge divided by time. An ‘open’ circuit is simply one with a high enough resistance that the current is close enough to zero to be considered zero for all ‘practical’ purposes.

Consider lightning as an example. When we see lightning, there is a current of several thousand amps flowing between clouds or between the earth and clouds. If you hook an ammeter into the ground wire of a lightning rod , you will get a nonzero reading most of the time-just too small to ‘notice’ for most purposes.

The current most people think about in circuit analysis is based on a model -or ‘ideal’ circuit elements where wires have no resistance and ‘open’ circuits have infinite resistance-neither of which happens in the ‘real’ world.

Explanation:

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