what is the source of emf waves?



what is the source of emf waves?..

Answer / guest

The sources of classical electromagnetic waves are
accelerating electric charges. (Note that acceleration
refers to a change in velocity, which occurs whenever a
particle’s speed or its direction of motion changes.) A
common example is the generation of radio waves by
oscillating electric charges in an antenna. When a charge
moves in a linear antenna with an oscillation frequency f,
the oscillatory motion constitutes an acceleration, and an
electromagnetic wave with the same frequency propagates away
from the antenna

Is This Answer Correct ?    8 Yes 0 No

Post New Answer

More Electronics Communications Interview Questions

Explain why is the diffusion technique of formation of resistor most widely used?

0 Answers  


In the OTA, the transconductance is controlled by A The ac supply voltage B A bias current C The input signal voltage D The manufacturing process

0 Answers  


Define what is hole current?

0 Answers  


what is the maximum carrier frequency in AM broadcast?

2 Answers  


With the help of diagram explain a cmos inverter.

0 Answers  






The change in a semi-conductor strain gauge, in resistance on application of strain is mainly due to the change in its

0 Answers   C DAC, CDAC,


what is meant by tunneling?

0 Answers  


Define cmrr of an opamp?

0 Answers  


Explain the main application of scr in electronic field as well as in software field?

0 Answers  


For the same order of doping, why does n-type semiconductor exhibit larger conductivity than p-type semiconductor?

0 Answers  


whats the difference between diode and transistor

7 Answers  


types of communication scheme in power plant ?

0 Answers   DVC,


Categories
  • Civil Engineering Interview Questions Civil Engineering (5085)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4452)
  • Electrical Engineering Interview Questions Electrical Engineering (16637)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1095)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)