An alternating voltage is given by : $e = e_1\, \sin \omega t + e_2\, \cos \omega t$. Then the root mean square value of voltage is given by :-
An alternating voltage is given by : $e = e_1\, \sin \omega t + e_2\, \cos \omega t$. Then the root mean square value of voltage is given by :-
- A
$\sqrt {e_1^2 + e_2^2}$
- B
$\sqrt {e_1e_2}$
- C
$\sqrt {\frac{e_1e_2}{2}}$
- D
$\sqrt {\frac{e_1^2 + e_2^2}{2}}$
Similar Questions
The alternating current is given by
${i}=\left\{\sqrt{42} \sin \left(\frac{2 \pi}{{T}} {t}\right)+10\right\} {A}$
The $r.m.s.$ value of this current is ${A}$
The alternating current is given by
${i}=\left\{\sqrt{42} \sin \left(\frac{2 \pi}{{T}} {t}\right)+10\right\} {A}$
The $r.m.s.$ value of this current is ${A}$
- [JEE MAIN 2021]
What is $rms$ ? Write the formula of $rms $ for current ?
What is $rms$ ? Write the formula of $rms $ for current ?
In a circuit, current varies with time as $i = 2\sqrt t $ . Root mean square value of current for interval $t = 2\,s$ to $t = 4\,s$ is
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In an ac circuit, peak value of voltage is $423\, volts$. Its effective voltage is .......... $volts$
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In a circuit, the value of the alternating current is measured by hot wire ammeter as $10$ ampere. Its peak value will be......$A$
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