Question

An ideal transformer has `100` turns in the primary and `250` turns in the secondary. The peak value of the ac is `28 V`. The r.m.s. secondary voltage is nearest to
A. `50 V`
B. `70 V`
C. `100 V`
D. `40 V`

Answer 1

Correct Answer - A
`(N_(s))/(N_(p))=(V_(s))/(V_(p))implies(250)/(100)=(V_(s))/(28//sqrt(2))impliesV_(s)=50V`