Addition of vector obeys_____________?
A. Commutative law
B. Distributive law
C. Associative law
D. All given laws in A, B and C
Physics Mcqs
An inductor may store energy in ________________?
An inductor may store energy in ________________?
A. Its electric field
B. Its coils
C. Its magnetic field
D. Both electric and magnetic fields
Two identical coaxial circular loops carry equal currents in the same direction. If the loops approach each other the current in______________?
Two identical coaxial circular loops carry equal currents in the same direction. If the loops approach each other the current in______________?
A. Each increase
B. Each decrease
C. Each remains the same
D. One increases whereas that in the other decreases
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 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
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_______________?
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
The phase angle between the voltage and the current in an AC circuit consisting of a resistance is______________?
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°
Choose the correct statement. In the case of AC circuit ohms law holds for_______________?
Choose the correct statement. In the case of AC circuit ohms law holds for_______________?
A. Peak values of voltage and current
B. Effective values of voltage and current
C. Instantaneous values of voltage and current
D. All of the above
An inductive coil has a resistance of 100Ω. When an AC signal of frequency 1000Hz is fed to the coil the applied voltage leads the current by 45Ω. What is the inductance of the coil ?
An inductive coil has a resistance of 100Ω. When an AC signal of frequency 1000Hz is fed to the coil the applied voltage leads the current by 45Ω. What is the inductance of the coil ?
A. 10mH
B. 12mH
C. 16mH
D. 20mH
An A.C series circuit containing 4Ω resistance and 3Ω inductive reactance. The impedance of the circuit is______________?
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
At resonance the value of the power factor in an L-C-R series circuit is_______________?
At resonance the value of the power factor in an L-C-R series circuit is_______________?
A. Zero
B. 2
C. 1
D. Not definite