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NEET2015PhysicsCurrent ElectricityActual

A , B and C are voltmeters of resistance R , 1 .5 R and 3 R respectively as shown in the figure. When some potential difference is applied between X and Y , the voltmeter readings are V A ,   V B and V C respectively. Then:

Options

  1. AV A = V B = V C
  2. BV A ≠ V B = V C
  3. CV A = V B ≠ V C
  4. DV A ≠ V B ≠ V C

Correct answer

A. V A = V B = V C

Step-by-step solution

Voltage in parallel is constant ( aligned & i_P=i_B+i_C V_B=V_c & V_p R_i = V_B R_B + V_C R_C & 1 R_p = 1 R_B + 1 R_C 1 R = 2 3 R + 1 3 R R^ & =R & V_ X P =V_A=i R & V_ P Q =V_B=V_C=i R V_A & =V_B=V_C aligned )

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