Physics MCQs

A. Each increase
B. Each decrease
C. Each remains the same
D. One increases whereas that in the other decreases

A. Its electric field
B. Its coils
C. Its magnetic field
D. Both electric and magnetic fields

A. Zero
B. 2
C. 1
D. Not definite

A. Mean value of i2
B. Square root of mean value of i2
C. Square root of i2
D. Square of 1/2

A. I = 2i∫sin(πt/2)
B. I = 2i∫sin(2πt)
C. I = 2isinπt
D. I = i∫sin(2πt)

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

A. The current lead voltage by phase angle is 90 degrees
B. The voltage leads current by phase angle is 90 degrees
C. The current lead voltage by phase angle is 45 degrees
D. The voltage leads current by phase angle is 45 degrees

A. Lags behind voltage by π/2
B. Is in phase with voltage
C. Opposite in phase of voltage by π
D. Leads forward the voltage by π/2

A. 32ω
B. 62ω
C. 50ω
D. 100ω

A. Remains same
B. Brightness increases
C. Brightness decreases
D. No light