Q 7.13 (b) A coil of inductance and resistance is connected to a , ac supply. What is the time lag between the voltage maximum and the current maximum?
Let the voltage in the circuit be
Current in the circuit be
Where is the phase difference between voltage and current.
V is maximum At
t = 0
is maximum At
Hence, the time lag between voltage maximum and the current maximum is
For phase difference we have
Hence time lag between the maximum voltage and the maximum current is