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## Homework Statement

A Primary coil, with ##n_1## turns, is driven with a voltage ##V=V_0sin(wt)##

Find the voltage in a secondary coil, with ##n_2## turns, as a function of time

## Homework Equations

## The Attempt at a Solution

Mutual Inductance ##M=\mu_0 n_1 n_2/l *area##

##emf=-d\phi/dt##

##\phi=\mu_0 n_1 n_2 area/l *I ##

##v=LdI/dt##

##I=1/L \int v dt##

##I=1/L (-1/w cos(wt))##

I don't know whether I'm allowed to use the usual expression here for relating current and voltage in an inductor, since we have mutual inductance?

I don't really know how to find the current in the primary coil, and hence can't find the voltage across the secondary coil.

My other thought was: am I allowed to use the transformer equation, or does this only apply for max / rms voltages?

Many thanks

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