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An AC source having a frequency of 50Hz ...

An `AC` source having a frequency of `50Hz` and voltage supply of `300v` is applied directly to the condenser of capacity `100muF`. The peak and `rms` values of displacement current are

A

`9.42 A`, `(9.42)/(sqrt(2))A`

B

`(9.42)/(sqrt(2))A`, `9.42sqrt(2)A`

C

`9.42sqrt(2)A`, `9.42 A`

D

`9.42A`, `9.42 A`

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem, we need to find the peak and RMS values of the displacement current when an AC voltage is applied to a capacitor. Here’s a step-by-step solution: ### Step 1: Identify Given Values - Frequency (f) = 50 Hz - Voltage (E) = 300 V - Capacitance (C) = 100 µF = 100 × 10^-6 F ### Step 2: Calculate Angular Frequency (ω) The angular frequency (ω) is given by the formula: \[ \omega = 2\pi f \] Substituting the given frequency: \[ \omega = 2\pi \times 50 \, \text{Hz} = 100\pi \, \text{rad/s} \] ### Step 3: Calculate Capacitive Reactance (X_C) The capacitive reactance (X_C) is calculated using the formula: \[ X_C = \frac{1}{\omega C} \] Substituting the values of ω and C: \[ X_C = \frac{1}{100\pi \times 100 \times 10^{-6}} = \frac{1}{0.01\pi} = \frac{100}{\pi} \, \Omega \] ### Step 4: Calculate RMS Current (I_RMS) The RMS current (I_RMS) can be calculated using the formula: \[ I_{RMS} = \frac{E}{X_C} \] Substituting the values of E and X_C: \[ I_{RMS} = \frac{300}{\frac{100}{\pi}} = 300 \times \frac{\pi}{100} = 3\pi \, \text{A} \approx 9.42 \, \text{A} \] ### Step 5: Calculate Peak Current (I_peak) The peak current (I_peak) is related to the RMS current by the formula: \[ I_{peak} = I_{RMS} \times \sqrt{2} \] Substituting the value of I_RMS: \[ I_{peak} = 9.42 \times \sqrt{2} \approx 9.42 \times 1.414 \approx 13.33 \, \text{A} \] ### Final Results - **RMS Current (I_RMS)**: Approximately 9.42 A - **Peak Current (I_peak)**: Approximately 13.33 A

To solve the problem, we need to find the peak and RMS values of the displacement current when an AC voltage is applied to a capacitor. Here’s a step-by-step solution: ### Step 1: Identify Given Values - Frequency (f) = 50 Hz - Voltage (E) = 300 V - Capacitance (C) = 100 µF = 100 × 10^-6 F ### Step 2: Calculate Angular Frequency (ω) ...
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