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QJEEM19Ph3224: JEE Main 2019 Physics - Class 12 JEEM19Ph3224 Solution: The Wheatstone bridge shown in figure, here, gets balanced when …

The Wheatstone bridge shown in figure, here, gets balanced when the carbon resistor used as R1 has the colour code (Orange, Red, Brown). The resistors R2 and R4 are 80Ω and 40Ω, respectively. Assuming that the colour code for the carbon resistors gives their accurate values, the colour code for the carbon resistor, used as R3, would be -

JEE Main 2019 (Online) 10th January Evening Slot Physics - Current Electricity Question 263 English

Multiple Choice Options

  • A Brown, Blue, Brown
  • B Grey, Black, Brown
  • C Red, Green, Brown
  • D Brown, Blue, Black

Step-by-Step Verified Solution

R1 = 32 × 10 = 320

for wheatstone bridge

⇒  R1R3=R2R4

320R3=8040

R3=160

∴  Correct answer is Brown  Blue  Brown

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