Question

The amplitude modulated current is given by $i=125[1+0.6sin2900t]sin(5.50\times {10}^{5}t).$ The rms value of carrier current will be

• A. $\frac{125}{\sqrt{2}}A$
• B. $\frac{100}{\sqrt{2}}A$
• C. $\frac{75}{\sqrt{2}}A$
• D. $\frac{50}{\sqrt{2}}A$

Answer 1

Answer: (A)

$\frac{125}{\sqrt{2}}A$

The rms value is $\frac{I_C}{\sqrt{2}}=\frac{125}{\sqrt{2}}$