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Concepts Of Physics MCQ Edition [Volume 2]PhysicsElectric Current in Conductors

Determine the currents flowing through the three resistors depicted in the diagram.

Options

  1. A0 A in the upper 4 resistor and 0.6 A in the remaining two
  2. B1 7 A in all three resistors
  3. C0.2 A in all three resistors
  4. D0 A in the upper 4 resistor and 0.2 A in the remaining two

Correct answer

A. 0 A in the upper 4 resistor and 0.6 A in the remaining two

Step-by-step solution

Based on the given circuit diagram, we can analyze the flow of current step-by-step: 1. Identify the short circuit: There is a plain horizontal wire connected directly across the upper 4 resistor. This wire has zero resistance and acts as a short circuit. Current always follows the path of least resistance, so all the current will flow through this plain wire, bypassing the upper 4 resistor entirely. Therefore, the current through the upper 4 resistor is 0 A . 2. Simplify the circuit: With the upper resistor shorte

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