A. Twice
B. One half
C. Four times
D. None
A. Sound waves
B. Electromagnetic waves
C. Radio waves
D. Modulated waves
Waves emitted from the antenna are__________________? Read More »
Alternating Current, Physics Mcqs A. Electric and magnetic fields moving parallel to each other
B. Magnetic field moving with velocity of light in space
C. Electric field moving with velocity of light
D. Electric and magnetic fields moving perpendicular to each other
An electromagnetic wave consists of _____________________? Read More »
Alternating Current, Physics Mcqs A. λ-rays
B. Positive rays
C. Cathode rays
D. More than sound waves
Electromagnetic waves travel in free space with the speed of___________________? Read More »
Alternating Current, Physics Mcqs A. fluctuates off and on
B. varies in magnitude alone
C. changes its direction again and again
D. changes its magnitude harmonically and reverses its direction of flow after regularly recurring intervals
An alternating current or voltage_____________________? Read More »
Alternating Current, Physics Mcqs