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COMEDK2019PhysicsAlternating Current

In the circuit shown, the internal resistance of the cell is negligible. The steady state current in the 2 2 resistor is

Options

  1. A0.9 ~A
  2. B1.5 ~A
  3. C0.6 ~A
  4. D1.2 ~A

Correct answer

A. 0.9 ~A

Step-by-step solution

In the steady state analysis capacitor acts as an open circuit. Therefore, the equivalent circuit is given as Thus, current in the 4 resistor is zero. 2 and 3 resistors are parallel to each other. Thus, the resistance in the upper branch is given by R= 2 3 2+3 = 6 5 The upper branch resistor are connected to 2.8 resistor in series. Therefore, equivalent resistance in the circuit is given by aligned R_ eq & 28+ 6 5 &= 14.0+6 5 =4 aligned Current, I= Voltage Resistance = 6 4 =15 ~A Current in the 2 resistor is given

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