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  • If a variable frequency ac source is connected to a capacitor then with decrease in frequency the displacement current will:  Option: 1 i

If a variable frequency ac source is connected to a capacitor then with decrease in frequency the displacement current will:
 

Option: 1

increase
 


Option: 2

decrease

 


Option: 3

remain constant
 


Option: 4

first decrease then increase


Answers (1)

best_answer

Current through capacitor, \mathrm{\mathrm{I}=\frac{\mathrm{E}}{\mathrm{X}_{\mathrm{C}}}=\frac{\mathrm{E}}{\frac{1}{\omega \mathrm{C}}}=\varepsilon \mathrm{CE}=2 \pi\: \mathrm{VCE} \: or\: \mathrm{I} \propto \mathrm{v}}

\mathrm{\therefore \quad} decrease in frequency \mathrm{\mathrm{v}} of ac source decreases the conduction current. As displacement current is equal to conduction current, decrease in \mathrm{v} decreases displacement current in circuit.

Hence option 2 is correct.

Posted by

himanshu.meshram

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