If an a.c. signal generator drives a series RLC circuit, then the circuit undergoes resonance only due to variation in __________
A. Supply voltage
B. Series resistance
C. Supply frequency
D. Phase angle
Answer:C
If an a.c. signal generator drives a series RLC circuit, then the circuit undergoes resonance only due to variation in __________
A. Supply voltage B. Series resistance C. Supply frequency D. Phase angle