# Identify the mathematical expression for amplitude modulated wave:$(a) Ac \sin\left [ \left \{ \omega_c +1k_{1Vm}\left ( t \right ) \right \} t+\phi \right ]$ $(b) Ac \sin \left \{ \omega_c\: t+\phi + k_{2Vm} (t)\right \} \right$ $(c) \left \{ Ac +k_{2}V_m(t) \right \}\sin\left ( \omega _ct+\phi \right )$ $(d )A_{c\: Vm}(t)\sin(\omega _ct+\phi )$

The correct mathematical expression for amplitude modulated wave is

$(c) \left \{ Ac +k_{2}V_m(t) \right \}\sin\left ( \omega _ct+\phi \right )$

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