$\tiny{e.9.2.5}$
The heater of a single 251.6 tube draws 0.3 amp.
How many milli-amperes will the heaters of two such tubes draw if they are conected in parallel?
\begin{align*}\displaystyle
&=\color{red}{?amp.}
\end{align*}
$\tiny{e.9.2.5}$
The heater of a single 251.6 tube draws 0.3 amp.
How many milli-amperes will the heaters of two such tubes draw if they are conected in parallel?
\begin{align*}\displaystyle
&=\color{red}{?amp.}
\end{align*}