A. Lagging each other
B. They are at 90? phase difference
C. They have zero phase difference
D. No phase difference
Related Mcqs:
- n an LCR series circuit, if V is the effective value of the applied voltage VR is the voltage across R VL is the effective voltage across L & Vc is the effective voltage across C then_______________?
IA. V = VR+VL+VC
B. V2 = VR2+VL2+VC2
C. V2 = VR2+(VL-VC)2
D. V2 = VL2+(VR-VC)2 - A voltage V = V0 cos ωt is applied across a resistor of resistance R the average power dissipated per cycle in the resistor is given by___________?
A. V√/√2R
B. V/√2√R
C. V02/√2R
D. 2/√2√R - An alternating current of the r.m.s value of 4.0 A and frequency 50Hz flows in a circuit containing a 10Ω resistor. The peak current is then ?
A. 20A
B. 20.66A
C. 6.66A
D. 5.66A - The frequency of a circuit consisting of a capacitance C and a resistor R is________________?
A. C/R
B. R/C
C. 1/RC
D. 1/ 2RC - The value of the steady current which when flowing through the same resistor produces heat at the same rate as the mean rate of heat produced by the alternating current is__________________?
A. Average current
B. Sinusoidal current
C. r.m.s current
D. Net current - When a pure inductor of inductance L and a pure capacitor of capacitance C are connected in parallel to a sinusoidal potential difference V the potential difference across both L & C will be_______________?
A. Same
B. Different
C. At L will be more than at C
D. At L will be less than at C - The phase angle between the voltage and the current in an AC circuit consisting of a resistance is______________?
A. Zero
B. 45°
C. 90°
D. 180° - If capacitance of L-C circuit is made four times then frequency of the circuit becomes___________________?
A. Twice
B. One half
C. Four times
D. None - An A.C series circuit containing 4Ω resistance and 3Ω inductive reactance. The impedance of the circuit is______________?
A. 1Ω
B. 5Ω
C. 7Ω
D. 7Ω - An OP-AMP comparator is a circuit that compares the signal voltage on one of its inputs with a ______________?
A. Non-inverting voltage at output
B. Reference voltage on the other
C. Virtual input
D. Output
