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KCET2007PhysicsCurrent Electricity

The current passing through the ideal ammeter in the circuit given below is

Options

  1. A1.25 ~A
  2. B1 ~A
  3. C0.75 ~A
  4. D0.5 ~A

Correct answer

D. 0.5 ~A

Step-by-step solution

Here, 2 and 2 are in parallel aligned 1 R &= 1 2 + 1 2 R &= 2 2 2+2 =1 aligned Now, internal resistance (1 ), 2 , 4 and resistance R are in series R_ n e t =1 +2 +4 +1 =8 Hence, current I= V R = 4 8 =0.5 ~A

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