CBSE Class 12 Physics 2014 Outside Delhi Set 1 Paper

© examsnet.com
Question : 7
Total: 30
Why is the use of A.C. voltage preferred over D.C. voltage? Give two reasons
Solution:  
Two reasons to use A.C. voltage over D.C. are:
(a) AC power can be easily step up or step down using a transformer.
(b) Electricity that is coming to our homes is AC because it comes from a faraway power generation plant so the loss of energy during transmission is very less in the case of AC power than DC power.
© examsnet.com
Go to Question: