Question

An energy source will supply a constant current into the load if its internal resistance is.

Answer 1

Answer:

If its internal resistance is zero or remains constant.

Explanation:

• Considering the attached figure it is possible to be written an expression for the current that flows through the load connected to a source of voltage as follows.

                                                 $\begin{aligned}\ \small i&=\small \frac{E}{R+r}\end{aligned}$

• Here, $E,\,R,\,r$ represent the voltage of the energy source, the load resistance and the internal resistance of the source respectively

• The denominator of the fraction is subject to change due to $r$ being the possible parameter that is variable.
• Therefore, the current can be fixed at $\bold{r =0}$ or $\bold{r = k}$, $k =$ constant.
• In such a case the current would appear to be in either form as follows,

                                $\begin{aligned}i = \frac{V}{R} \qqud \qquad \text{or}\qquad i = \frac{V}{R+k}\end{aligned}$

• Once either of the above condition is held the current  = constant.

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