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MHT CET202019 Oct 2020Evening ShiftPhysicsCurrent ElectricityActual

Two galvanometers ' A ' and 'B' require currents of 4 ~mA and 7 ~mA , respectively to produce the same deflection of 20 divisions. If ' S _ A ^ and ^ S B ^ are their sensitivities, respectively, then

Options

  1. AS _ A > S _ B
  2. BS _ A = S _ B = 4 7
  3. C~S _ B = 7 4 = S _ A
  4. DS _ A < S _ B

Correct answer

A. S _ A > S _ B

Step-by-step solution

(D) aligned sensitivity S &= I S _ A S _ B &= I _ B I _ A = 7 4 S _ A > S _ B & aligned

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