Q32 / 32 · NTA Abhyas (JEE Main) 2020 · Physics · Communication System

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

A
$9.25 A$
B
$22 A$
Correct answer
C
$10.3 A$
D
$5.5 A$

Solution

$I_{T} = I_{C} \sqrt{1 + \frac{m^{2}}{2}}$

$I_{C} = \frac{11}{\sqrt{1 + \frac{{(0 .5)}^{2}}{2}}} = 10.3 A$

Hence, the correct answer is option: 'C'.

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