Email
Chat with tutors
logo

Ask Questions, Get Answers

X
 
Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2007
Answer
Comment
Share
Q)

A transformer is used to light a 100 W and 110 V lamp from a 220 V mains. If the main current is 0.5 amp, the efficiency of the transformer is approximately-


( A ) 10%
( B ) 50%
( C ) 30%
( D ) 90%

1 Answer

Home Ask Tuition Questions
Practice
Your payment for is successful.
Continue
...