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a personal computer with a monitor and keyboard requires 40 w at 115 v (rms). calculate the rms value of the current carried by its power cord. g

Sagot :

BinithaR

The RMS value of the current carried cord is 0.347

What is RMS value and voltage ?

A sinusoidal source of electromotive force is described by its root-mean-square (rms) voltage (Vrms). It is the voltage squared time average's square root. Vrms is equal to V0/2, or, in other words, 0.707V0.

RMS, or the Root-Mean-Square of current instantaneous values Direct current that passes through a resistance to produce alternating current yields the RMS value of the current. AC has an RMS value that is higher than the average. The area covered during a half-cycle can be used to calculate the sine current wave's RMS value.

To determine the effective current through the power code

[tex]I_{n}[/tex] = p/[tex]v_{n}[/tex]

Where [tex]I_{n}[/tex] = effective current

P = power 40 w

[tex]v_{n}[/tex]= effective voltage (  115v)

[tex]I_{n}[/tex] =40/115

[tex]I_{n}[/tex] =0.347 A

Therefore the RMS value is 0.347

To learn more about RMS value refer to :

https://brainly.com/question/22974871

#SPJ4

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