What is the different between A.C. and D.C.?

1.	What is the different between A.C. and D.C.?
Answer» (i) D.C. flows in one direction and its value is constant where as the value of A.C., changes periodically with time and hence it has positive and negative values. (ii) A.C. can be transferred from one place to other with less loss of energy but D.C. cannot transferred. (iii) A.C. can be controlled by choke coil with least loss of energy where as D.C. is controlled only by ohmic resistance in which there is maximum loss of energy. (iv) The machines depend on A.C. have longer life in comparision to the machine which depend on D.C. (v) A.C. is more dangerous than D.C. because the people feel more shock with A.C.

Answer»

(i) D.C. flows in one direction and its value is constant where as the value of A.C., changes periodically with time and hence it has positive and negative values.

(ii) A.C. can be transferred from one place to other with less loss of energy but D.C. cannot transferred.

(iii) A.C. can be controlled by choke coil with least loss of energy where as D.C. is controlled only by ohmic resistance in which there is maximum loss of energy.

(iv) The machines depend on A.C. have longer life in comparision to the machine which depend on D.C.

(v) A.C. is more dangerous than D.C. because the people feel more shock with A.C.

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