Question

prove ohm's law using first principel​

Answer 1

Answer:

as we know that V = IR

I is constant

hence V proportional R

Answer 2

From first principles (i.e. ohm's law, inductor describing function, etc.) Derive the equations for the voltage across and the current through the resistor in the following circuit. In the course of your answer clearly show the origins of the time constant for this series LR circuit. Repeat (A) but now the input signal switches from a +5V source to a 0V source, much as you would expect a square wave to oscillate. You can assume the output voltage (Vo(t)) has reached steady state before the transition back to 0V. By now you should be aware that an infinite combination of resistors and capacitors or an resistors and inductors can exhibit the same time constant (e.g. the tau for a 10 10 mu F series circuit.)