Question

A antenna current of an AM broadcast transmitter modulated by $50\%$ is $11A$. The carrier current is

• A. $10.35A$
• B. $9.25A$
• C. $10A$
• D. $5.5A$

Answer 1

Answer: (A)

$I_{\text{Carrier }}=\frac{I_{\text{rms }}}{\sqrt{1+\frac{m_a^2}{2}}}$
$=\frac{11}{\sqrt{1+\frac{(0.5{)}^2}{2}}}=10.35A$