a charge of 0.75 coulombs passes through a copper wire every 15 seconds. what is the current? if that wire is 2.00 km long and has a diameter of 1.00 mm, what is the potential difference between the two ends?

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28-10-2022
Physics

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a charge of 0.75 coulombs passes through a copper wire every 15 seconds. what is the current? if that wire is 2.00 km long and has a diameter of 1.00 mm, what is the potential difference between the two ends?

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Sakshtiwari Sakshtiwari · Answer 1 · 2022-11-02T02:27:01-04:00

Ohm's Law is an utilized concept: In any given conductor, such as a wire, Ohm's law specifies how Voltage, Current, and Resistance react when one or more of the variables change. The electrical potential that pulls electrons across a conductor is known as voltage, and it is measured in Volts.

V= IR

In terms of resistance, R=l/a = 2000/(1/2 10-3),

where d=r/2

=2000/(4 10-6) = 0.002 ohm.

I= q/t = 0.75/ 15

= 0.05 coulomb for current.

V=IR =0.05 0.002/ =

318 10-11 volt

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