An alternating current is given by the equation i = i1 sin $\omega$t + i2 cos $\omega$t. The rms current will be :

Question

An alternating current is given by the equation i = i₁ sin $\omega$t + i₂ cos $\omega$t. The rms current will be :

${1 \over {\sqrt 2 }}{\left( {i_1^2 + i_2^2} \right)^{{1 \over 2}}}$

${1 \over {\sqrt 2 }}({i_1} + {i_2})$

${1 \over {\sqrt 2 }}{({i_1} + {i_2})^2}$

${1 \over 2}{\left( {i_1^2 + i_2^2} \right)^{{1 \over 2}}}$

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