MHT CET202519 Apr 2025Evening ShiftPhysicsAlternating CurrentActual
A coil of resistance 450 and self - inductance 1.5 henry is connected to an a.c. source of frequency 150 ~Hz . The phase difference between voltage and current is
Options
- A⁻¹(0 5)
- B⁻¹(1)
- C⁻¹(1 5)
- D⁻¹(2 0)
Correct answer
B. ⁻¹(1)
Step-by-step solution
Phase difference in RL circuit The phase angle between voltage and current satisfies = X_L R , where X_L is inductive reactance and R is resistance. Given R = 450 , L = 1.5 H , and f = 150 Hz , the inductive reactance is X_L = 2 f L = 2 150 1.5 = 450 . Substituting into the phase formula: = X_L R = 450 450 = 1 . The phase difference is therefore = ⁻¹(1) , corresponding to option B.