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JEE MainPhysicsCurrent Electricity

Three resistors of resistances 6 , 3 , and 2 are connected in series. An ideal conducting wire connects the left end of the 6 resistor to the junction between the 3 and 2 resistors. Another ideal conducting wire connects the junction between the 6 and 3 resistors to the right end of the 2 resistor. This entire combination is connected in series with an unknown resistor R_x and an ideal battery of 12 V . If the power

Options

  1. A5
  2. B1
  3. C11
  4. D4

Correct answer

B. 1

Step-by-step solution

Let the junctions between the series resistors be labeled as follows: J₀ (left of 6 ), J₁ (between 6 and 3 ), J₂ (between 3 and 2 ), and J₃ (right of 2 ). The ideal wire connecting J₀ to J₂ makes them an equipotential node (let's call it A ). The ideal wire connecting J₁ to J₃ makes them another equipotential node (let's call it B ). Now, observe the connections of each resistor: 1. The 6 resistor is connected between J₀ ( A ) and J₁ ( B ). 2. The 3 resistor is connected between J₁ ( B ) and J₂ ( A ). 3. The 2 resi

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