# I Doubt in Kirchoff's theorem

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1. Jul 29, 2016

### Titan97

According to Kirchoff

$$e=J(T,f)A$$

$e$ is the power emitted and $A$ is the power absorbed

If $E$ is the power supplied, can I say that

$$e=E-A$$

2. Jul 29, 2016

### Simon Bridge

"A" is the power absorbed by what?

3. Jul 29, 2016

### Titan97

by the object. I think i misunderstood the theorem.
A is the fraction of the power absorbed.