In the given network, if the 10-ohm resistor is open circuited, then the equivalent resistance between A and B is equal to _______.

F3 Madhuri Engineering 10.01.2023 D3

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  1. 20 ohm
  2. 15 ohm
  3. 10 ohm
  4. 5 ohm

Answer (Detailed Solution Below)

Option 1 : 20 ohm
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Detailed Solution

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The correct answer is option 1):(20 ohm)

Concept:

When two resistors are connected in series the equivalent resistance is the sum of individual resistance

Calculation:

Given

F3 Madhuri Engineering 10.01.2023 D3

  • When the 10-ohm resistor is open circuit, No current will flow through the 20-ohm resistor
  • So 5-ohm resistor and 15-ohm resistor are connected in series the equivalent resistance be = 5 +15 = 20 ohm
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