Question 490: AC fundamentals

Question

In an electric circuit, a capacitor of reactance $55 \Omega$ is connected across the source of 220 V . The value of displacement current is

Accepted Answer

To determine the displacement current in the circuit, we start by recalling that for a capacitor in an AC circuit, the current is given by the voltage divided by the capacitive reactance. Here's how we can compute it:
The capacitive reactance is given as:
$$X_C = 55 \, \Omega$$
The voltage supplied is:
$$V = 220 \, 	ext{V}$$
The formula for the current through the capacitor (often referred to as the displacement current in this context) is:
$$I = \frac{V}{X_C}$$
Substituting the given values:
$$I = \frac{220}{55} = 4 \, 	ext{A}$$
Therefore, the displacement current is 4 A, which corresponds to Option B.

Answer

2 A

Answer

4 A

Answer

6 A

Answer

8 A

AC fundamentals

In an electric circuit, a capacitor of reactance 55 \Omega is connected across the source of 220 V . The value of displacement current is

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