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Concepts Of Physics MCQ Edition [Volume 2]PhysicsSemiconductors and Semiconductor Devices

Determine the current through the battery in the left and right circuits shown in the figure, respectively.

Options

  1. A1 A and 1 A
  2. B0.5 A and 1 A
  3. C0.5 A and 0.5 A
  4. D1 A and 0.5 A

Correct answer

D. 1 A and 0.5 A

Step-by-step solution

In the left circuit: The positive terminal of the 5 V battery is connected to the p-side of both diodes. Therefore, both diodes are forward-biased and act as closed switches (assuming ideal diodes). The two 10 resistors are in parallel. Equivalent resistance, R_ eq = 10 10 10 + 10 = 5 . Current through the battery, I_ left = V R_ eq = 5 5 = 1 A . In the right circuit: The positive terminal of the battery is connected to the p-side of the top diode and the n-side of the bottom diode. Thus, the top diode is forward-b

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