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That 90º lag comes from the derivative with respect to time in the Faraday's law of induction:

(Differential form)

Faraday's law of induction

(Integral form)

Faraday's law of induction

The left hand side of this last equation is the EMF. If those equations didn't have a derivate with respect to time, |EMF(t)| would be maximum when the apparent |B(t)| iswas maximum, but the (negative) derivative causes the sin(t) that there would be in EMF(t) to turn into a -cos(t), and that is where the 90º lag comes from.

That 90º lag comes from the derivative with respect to time in the Faraday's law of induction:

(Differential form)

Faraday's law of induction

(Integral form)

Faraday's law of induction

The left hand side of this last equation is the EMF. If those equations didn't have a derivate with respect to time, |EMF(t)| would be maximum when the apparent |B(t)| is maximum, but the (negative) derivative causes the sin(t) that there would be in EMF(t) to turn into a -cos(t), and that is where the 90º lag comes from.

That 90º lag comes from the derivative with respect to time in the Faraday's law of induction:

(Differential form)

Faraday's law of induction

(Integral form)

Faraday's law of induction

The left hand side of this last equation is the EMF. If those equations didn't have a derivate with respect to time, |EMF(t)| would be maximum when the apparent |B(t)| was maximum, but the (negative) derivative causes the sin(t) that there would be in EMF(t) to turn into a -cos(t), and that is where the 90º lag comes from.

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Telaclavo
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That 90º lag comes from the derivative with respect to time in the Faraday's law of induction:

(Differential form)

Faraday's law of induction

(Integral form)

enter image description hereFaraday's law of induction

The left hand side of this last equation is the EMF. If those equations didn't have a derivate with respect to time, |E|EMF(t)| would be maximum when the apparent |B(t)| is maximum, but the (negative) derivative causes athe sin(t) that there would be in EEMF(t) to turn into a -cos(t), and that is where the 90º lag comes from.

That 90º lag comes from the derivative with respect to time in the Faraday's law of induction:

(Differential form)

Faraday's law of induction

(Integral form)

enter image description here

The left hand side of this last equation is the EMF. If those equations didn't have a derivate with respect to time, |E(t)| would be maximum when |B(t)| is maximum, but the (negative) derivative causes a sin(t) in E(t) to turn into a -cos(t), and that is where the 90º lag comes from.

That 90º lag comes from the derivative with respect to time in the Faraday's law of induction:

(Differential form)

Faraday's law of induction

(Integral form)

Faraday's law of induction

The left hand side of this last equation is the EMF. If those equations didn't have a derivate with respect to time, |EMF(t)| would be maximum when the apparent |B(t)| is maximum, but the (negative) derivative causes the sin(t) that there would be in EMF(t) to turn into a -cos(t), and that is where the 90º lag comes from.

added 180 characters in body
Source Link
Telaclavo
  • 4.9k
  • 20
  • 29

That 90º lag comes from the derivative with respect to time in the Faraday's law of induction:

(Differential form)

Faraday's law of induction

If that(Integral form)

enter image description here

The left hand side of this last equation is the EMF. If those equations didn't have a derivate with respect to time, |E(t)| would be maximum when |B(t)| is maximum, but the (negative) derivative causes a sin(t) in E(t) to turn into a -cos(t), and that is where the 90º lag comes from.

That 90º lag comes from the derivative with respect to time in the Faraday's law of induction:

Faraday's law of induction

If that equation didn't have a derivate, |E(t)| would be maximum when |B(t)| is maximum, but the (negative) derivative causes a sin(t) in E(t) to turn into a -cos(t), and that is where the 90º lag comes from.

That 90º lag comes from the derivative with respect to time in the Faraday's law of induction:

(Differential form)

Faraday's law of induction

(Integral form)

enter image description here

The left hand side of this last equation is the EMF. If those equations didn't have a derivate with respect to time, |E(t)| would be maximum when |B(t)| is maximum, but the (negative) derivative causes a sin(t) in E(t) to turn into a -cos(t), and that is where the 90º lag comes from.

Source Link
Telaclavo
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