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NTA Abhyas 2020

Exam: NTA Abhyas
Year: 2020
Subject: Physics
Chapter: Communication System

NTA Abhyas 2020 · Physics · Communication System

The antenna current of an AM broadcast transmitter which is...

The antenna current of an AM broadcast transmitter which is modulated by

50 %

is

11 A

. The carrier current is

Options

A $9. 25A$
&
B $22A$
&
C $10. 3A$
&
D $5. 5A$
&

Correct answer

C. $10. 3A$

&

Step-by-step solution

${I}_{T} = {I}_{C}\sqrt{1 + \dfrac{m2}{2}}$

${I}_{C} = \dfrac{11}{1 + \dfrac{\left(0.5\right)^{2}}{2}} = 10. 3A$

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