What is the meaning of the term 'frequency' of an alternating current? What is its value in India?
Why is an alternating current considered to be advantageous over direct current for long-range transmission of electric energy?

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Solution

The number of times the electric current changes its direction in one second in an ac circuit gives us the frequency of an alternating current. In India, the frequency of the alternating current is 50 kHz.
Alternating current is considered advantageous over direct current because it can be stepped up or stepped down using a transformer which makes it more suitable for transmission of electric power over long distances without loss of energy.

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Similar questions

(a) What do you understand by the terms 'direct current' and 'alternating current' ?

(b) Name some sources of direct current and some of alternating current.

(d) What is the frequency of A.C. supply in India ?

13. Which of the following is the primary advantage of an alternating current (AC) over direct current (DC) ?

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