Ac through Resistor Only



ac through resistor only

Let an alternating emf be applied to a circuit containing resistor R only such type of circuit is called resistive circuit.

Let the emf applied to the circuit isac through resistor only

Let I be the current in the circuit then potential difference across the resistor is

ac through resistor only

Comparing

ac through resistor only

 

with ohm’s law, we see that current is equal to voltage/resistance

This means the resistance R is resistance for ac which is in fact the resistance for dc. Therefore the behavior of R is same for ac and dc.