Question

Describe Ohms Law as an equation in 1-2 sentences.

Describe the concept of internal resistance in 1-2 sentences.

Answer 1

The Ohm's law states that the current flowing through any object is directly proportional to the voltage applied across it.

I.e I (directly proportional) V.

On removing the proportionality, there comes a constant which is reciprocal of resistance R.

I.e. I = V/R

Hence V= IR.

Internal resistance.

This is the resistance offered by the source voltage when we try to model the voltage source in practical condition. In practical condition the volatge source does not has zero resistance. It has some finite resistance which is represented by the internal resistance.