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A shunt of resistance 1 Ω is connected across a galvanometer of 120 Ω resistance. A current of 5.5 ampere gives full scale deflection in the galvanometer. The current that will give full scale deflection in the absence of the shunt is nearly:
  • a)
    5.5 ampere
  • b)
    0.5 ampere
  • c)
    0.004 ampere
  • d)
    0.045 ampere
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
A shunt of resistance 1 Ω is connected across a galvanometer of 120 Ω...
Calculation:
- The shunt resistance, Rs = 1 Ω
- The galvanometer resistance, Rg = 120 Ω
- Full scale deflection current, Ig = 5.5 A

Formula used:
- When shunt resistance is connected, the total resistance in the circuit is given by:
Total resistance = (Rg * Rs) / (Rg + Rs) = (120 * 1) / (120 + 1) = 1.176 Ω
- The current passing through the galvanometer without the shunt is given by:
I = Ig * (Rg / (Rg + Rs)) = 5.5 * (120 / 121) ≈ 5.45 A

Calculation:
- In the absence of the shunt, the full scale deflection current is approximately 5.45 A, which is closest to 0.045 A.
Therefore, the correct answer is option d) 0.045 ampere.
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Community Answer
A shunt of resistance 1 Ω is connected across a galvanometer of 120 Ω...
The current that will given full scale deflection in the absence of the shunt is nearly equal to the current through the galvanometer when shunt is connected i.e. Ig
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A shunt of resistance 1 Ω is connected across a galvanometer of 120 Ω resistance. A current of 5.5 ampere gives full scale deflection in the galvanometer. The current that will give full scale deflection in the absence of the shunt is nearly:a)5.5 ampereb)0.5 amperec)0.004 ampered)0.045 ampereCorrect answer is option 'D'. Can you explain this answer?
Question Description
A shunt of resistance 1 Ω is connected across a galvanometer of 120 Ω resistance. A current of 5.5 ampere gives full scale deflection in the galvanometer. The current that will give full scale deflection in the absence of the shunt is nearly:a)5.5 ampereb)0.5 amperec)0.004 ampered)0.045 ampereCorrect answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A shunt of resistance 1 Ω is connected across a galvanometer of 120 Ω resistance. A current of 5.5 ampere gives full scale deflection in the galvanometer. The current that will give full scale deflection in the absence of the shunt is nearly:a)5.5 ampereb)0.5 amperec)0.004 ampered)0.045 ampereCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A shunt of resistance 1 Ω is connected across a galvanometer of 120 Ω resistance. A current of 5.5 ampere gives full scale deflection in the galvanometer. The current that will give full scale deflection in the absence of the shunt is nearly:a)5.5 ampereb)0.5 amperec)0.004 ampered)0.045 ampereCorrect answer is option 'D'. Can you explain this answer?.
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