NEET2012PhysicsAlternating CurrentActual
In a given series L C R circuit R=4 , X_L=5 and X_C=8 , the current
Options
- ALeads the voltage by ⁻¹(3 / 4) .
- BLeads the voltage by ⁻¹(5 / 8) .
- CLags the voltage by ⁻¹(3 / 4) .
- DLags the voltage by ⁻¹(5 / 8) .
Correct answer
A. Leads the voltage by ⁻¹(3 / 4) .
Step-by-step solution
The phase angle = ⁻¹ ( X_C-X_L R )= ⁻¹ ( 8-5 4 ) = ⁻¹ ( 3 4 ) Therefore, the current leads the voltage by ⁻¹ ( 3 4 )