Search any question & find its solution
Question:
Answered & Verified by Expert
A step-up transformer operates on $220 \mathrm{~V}$ and supplies current of $2 \mathrm{~A}$. The ratio of primary and secondary windings is $1: 20$. The current in the primary is
Options:
Solution:
2040 Upvotes
Verified Answer
The correct answer is:
$40 A$
$\begin{aligned} & \frac{N_{\mathrm{s}}}{N_p}=20=\frac{I_p}{I_s} \\ & \therefore I_p=20 I_S \\ & =20 \times 2=40 \mathrm{~A}\end{aligned}$
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.