A. Zero
B. 2
C. 1
D. Not definite
Related Mcqs:
- 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 - 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 - Three equal resistors connected in series with a source of e m f together dissipate 10 W of power each. What will be the power dissipated if the same resistors are connected in parallel across the same source of e m f ?
A. 40 W
B. 90W
C. 100W
D. 120W - 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 - Why should a resistance be introduced in a circuit in series deliberately ?
A. to increase current
B. to decrease current
C. to control current
D. just to give a good look to circuit - A fuse is placed in series with the circuit to protect against__________________?
A. high power
B. high voltage
C. high current
D. over heating - The sharpness of resonance is__________________?
A. Directly proportional to the damping force
B. Inversely proportional to the damping force
C. Equal to the square of damping force
D. Equal to the square of damping force - Which one does not work according to resonance ?
A. T.V
B. Radio
C. Microwave oven
D. Bulb - Electrical resonance is observed in_______________?
A. Radio
B. Microwave oven
C. Both in radio and microwave oven
D. Neither in radio nor in a microwave oven - The energy absorbed by a body is __________________ at resonance?
A. Maximum as well minimum
B. Minimum only
C. Maximum only
D. 0