Search any question & find its solution
Question:
Answered & Verified by Expert
(a) The peak voltage of an ac supply is $300 \mathrm{~V}$. What is the rms voltage?
(b) The rms value of current in an ac circuit is 10
A. What is the peak current?
(b) The rms value of current in an ac circuit is 10
A. What is the peak current?
Solution:
1388 Upvotes
Verified Answer
Given: $\max$ voltage $\mathrm{E}_0=300 \mathrm{~V}$
rms current $\mathrm{I}_{\mathrm{v}}=10 \mathrm{~A}$
To find: (1) rms voltage $\mathrm{E}_{\mathrm{v}}$
(2) $\max$. current $\mathrm{I}_0$
Formula : (1) $\mathrm{E}_{\mathrm{v}}=\frac{\mathrm{E}_0}{\sqrt{2}}=\frac{300}{\sqrt{2}}=212.1 \mathrm{~V}$
(2) $\mathrm{I}_0=\sqrt{2} \mathrm{I}_{\mathrm{v}}=\sqrt{2} \times 10=14.14 \mathrm{~A}$
rms current $\mathrm{I}_{\mathrm{v}}=10 \mathrm{~A}$
To find: (1) rms voltage $\mathrm{E}_{\mathrm{v}}$
(2) $\max$. current $\mathrm{I}_0$
Formula : (1) $\mathrm{E}_{\mathrm{v}}=\frac{\mathrm{E}_0}{\sqrt{2}}=\frac{300}{\sqrt{2}}=212.1 \mathrm{~V}$
(2) $\mathrm{I}_0=\sqrt{2} \mathrm{I}_{\mathrm{v}}=\sqrt{2} \times 10=14.14 \mathrm{~A}$
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.