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Which of the following statement is correct for alternating current when compared to DC?

Which of the following statement is correct for alternating current when compared to DC? Correct Answer Electrons keep changing its direction-backward and forward

Alternating Current:

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  • The current whose magnitude changes continuously with respect to every instant of time is known as alternating current.
  • After every half cycle, AC current changes its polarity.
  • This is due to electrons that keep changing their direction backward and forward.
     

​Direct Current:

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  • The current whose magnitude remains constant with respect to every instant of time is known as the direct current.
  • DC current does not change its polarity.

Related Questions

Below stated are some of the statements about the Alternating current. You need to identify which of the following is incorrect, 1. DC power is far more powerful than AC power. The efficiency and power to size characteristics of DC motors and apparatuses are increased. Lighting by DC (LED) is 75% more efficient than lighting from incandescence. 2. A comparatively high voltage alternating current may be generated and easily raised and dropped by the static equipment known as the transformer, which makes electrical energy transmission and distribution economical, 3. Initial costs and maintenance of the AC motor are less expensive since it has no switch and is less powerful than the DC motor for constant working speed, hence it is desired to create power as alternating current. 4. The great efficiency of transmission in ac makes electric power generation cost-effective, Produced in huge quantities in one station and distributed throughout a vast area.
Which one of the following devices changes low voltage alternating current to high voltage alternating current and vice-versa?
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