Question

In a series LCR circuit which is connected to an AC voltage source, choose the incorrect statement
(1) Algebraic sum of instantaneous voltage across L, C, R is a variable
42 Vunst + Vanst + Veinst
+ Veinst = V sourceinst
3) Voltage across inductor, capacitor, resistance behave as a vector
(4) Current is same in inductor, capacitor and resistance​

Answer 1

In a series LCR circuit connected to an a.c. source of voltage v=vmsinωt, use phasor diagram to derive an expression for the current in the circuit. Hence, obtain the expression for the power dissipated in the circuit. Show that power dissipated at resonance is maximum.