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Q.
The r.m.s voltage of the wave form shown is:
Alternating Current
Solution:
Short trick:
$V _{ rms }=\sqrt{\frac{\left( V _{1}\right)^{2}+\left( V _{2}\right)^{3}+\left( V _{3}\right)^{2}}{\text { Number of loops }}}$
$V _{ rms }=\sqrt{\frac{(10)^{2}+(10)^{2}+(10)^{2}}{3}}$
$V _{ rms }=\sqrt{\frac{300}{3}}=\sqrt{100}=10 V$
