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Alternating Current

Two identical coaxial circular loops carry equal currents in the same direction. If the loops approach each other the current in______________?

Alternating Current, Physics Mcqs /
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

Two identical coaxial circular loops carry equal currents in the same direction. If the loops approach each other the current in______________? Read More »

Alternating Current, Physics Mcqs

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___________?

Alternating Current, Physics Mcqs /
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

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___________? Read More »

Alternating Current, Physics 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_______________?

Alternating Current, Physics 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

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_______________? Read More »

Alternating Current, Physics Mcqs

Choose the correct statement. In the case of AC circuit ohms law holds for_______________?

Alternating Current, Physics Mcqs /
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

Choose the correct statement. In the case of AC circuit ohms law holds for_______________? Read More »

Alternating Current, Physics Mcqs

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 ?

Alternating Current, Physics Mcqs /
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 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 ? Read More »

Alternating Current, Physics Mcqs