#### Question

A low voltage supply from which one needs high currents must have very low internal resistance. Why?

#### Solution

According to Ohm’s law, the relation for the potential is *V *=* IR*

Voltage (*V*) is directly proportional to current (*I*).

*R* is the internal resistance of the source.

`I=V/R`

If *V* is low, then *R* must be very low, so that high current can be drawn from the source.

Is there an error in this question or solution?

Solution A Low Voltage Supply from Which One Needs High Currents Must Have Very Low Internal Resistance. Why? Concept: Ohm’s Law.