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In summary, the conversation is discussing the use of rms voltage when dealing with ac sources. The first part is asking for the peak voltage, which is defined by the equation emf = emfpeak * cos(wt+weird symbol), where the emf peak is assumed to be 330V. However, in a series circuit with a resistor and inductor, the peak voltage across either component must be less than the voltage supply's peak. This requires consideration of the reactance or impedance of the inductor.

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Where is the link?

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[tex]V_{peak}=\sqrt{2}V_{rms}[/tex]

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sandy.bridge said:

[tex]V_{peak}=\sqrt{2}V_{rms}[/tex]

Well that's the 2nd part of part b where it asks for the rms Voltage. The 1st part is asking for the peak. I thought the peak was defined by emf=emfpeak * cos(wt+weird symbol) and in this case wouldn't emf peak just be 330V?

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Mentor

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Peak Emf, or peak electromotive force, is the maximum voltage that can be generated in an electrical circuit. It typically occurs when a change in magnetic field induces a current in a conductor.

Finding peak Emf is important because it allows us to determine the maximum potential of an electrical circuit. This information is crucial for designing and optimizing various electrical systems and devices.

Peak Emf can be calculated by multiplying the maximum rate of change of magnetic flux by the number of turns in the coil. In other words, it is equal to the product of the induced voltage and the number of turns in the coil.

The factors that affect peak Emf include the strength of the magnetic field, the number of turns in the coil, and the speed at which the magnetic field changes. Additionally, the resistance and inductance of the circuit can also affect peak Emf.

Peak Emf can be measured using a voltmeter or an oscilloscope. These instruments can accurately measure the voltage in an electrical circuit and help determine the peak Emf value.

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