Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Electromagnetic Waves

Question:

Instantaneous displacement current 1A in the space between the parallel plates of 1$\mu$ F capacitor can be established by changing the potential difference at the rate of: 

Options:

0.1 V/s     

 1 V/s

106 V/s       

 10–6 V/s

Correct Answer:

106 V/s       

Explanation:

$I_d = \frac{dq}{dt} = C\frac{dV}{dt}$

$\Rightarrow \frac{dV}{dt} = \frac{I_d}{C} = \frac{1}{10^{-6}} = 10^6 V/s$