Alternating Current

A. Lagging each other
B. They are at 90? phase difference
C. They have zero phase difference
D. No phase difference

A. I = 2I∫Sin(πt/2)
B. I = 2I∫Sin(2πt)
C. I = 2ISinπt
D. I = I∫sin(2πt)

A. Mean value of I2
B. Square root of mean value of I2
C. Square root of I2
D. Square of 1/2

A. 0.9sec
B. 15 sec
C. 1.5x105sec
D. 0.9x102sec

A. Stationary
B. Longitudinal
C. Transverse
D. All the above

A. Energy
B. Momentum
C. Mass
D. Heat

A. Perpendicular to electric field
B. Perpendicular to both electric and magnetic field
C. Perpendicular to magnetic field
D. Parallel to electric and magnetic field

A. Magnetic field
B. Electric field
C. Electromagnetic force
D. Artificial gravitational field

A. 20A
B. 20.66A
C. 6.66A
D. 5.66A

A. Average current
B. Sinusoidal current
C. r.m.s current
D. Net current