- #1

loesung

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## Homework Statement

Given two inductors, connected in parallel connected to a battery, why do the following emf relations hold?

$$\mathcal{E}_1 = - N_2 A \frac{d B}{d t} = -M\frac{d I_1}{d t } \\

\mathcal{E}_2 = -L_2 \frac{dI_2}{dt}- M \frac{dI_1}{dt}$$

See attachment !

## Homework Equations

[/B]I know for example that the mutual inductance on coil 2 caused by the change in current I_1 is

$$\mathcal{E}_2 = - N_2 A \frac{d B}{d t} = -M\frac{d I_1}{d t },$$

## The Attempt at a Solution

It's not clear to me how there are two terms of the rhs of each of the equations in part (1) !

#### Attachments

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