Question

For high frequency, capacitor offers

• A. more resistance
• B. less resistance
• C. zero resistance
• D. none of these

Answer 1

Answer: (B)

less resistance

Answer 2

At a higher frequency, the charge on the capacitor plates will vary more rapidly, so $\left( \frac{dq}{dt} \right)$ will be higher resulting in an increase in the instantaneous current $\left( i=\frac{dq}{dt} \right)$ . This means lower capacitive reactance $ie$ , less resistance.