Electronics and Communication Engineering - Measurements and Instrumentation - Discussion
Discussion Forum : Measurements and Instrumentation - Section 1 (Q.No. 17)
17.
In a ballistic galvanometer, a charge of 100 μC gives a first swing of 25°. The charge required to cause first swing of 50° is
Answer: Option
Explanation:
swing is proportional to charge.
Discussion:
16 comments Page 2 of 2.
Aishwarya said:
8 years ago
What is Ballistic galvanometer?
Usama Akhtar said:
8 years ago
Q=kd.
100/25=4=k,
Q=4*50=200.
100/25=4=k,
Q=4*50=200.
Rajii said:
6 years ago
Please anyone explain it briefly.
Sharon said:
6 years ago
200 is the right answer. Because deflection torque is directly proportional to current.
Surya said:
4 weeks ago
I think Option A is the correct answer.
Surya said:
4 weeks ago
The correct answer option is 200 μC.
Establish the Governing Formula in a standard ballistic galvanometer, the total electrical charge ((Q)) that flows through the moving coil is directly proportional to the angle of its first swing or deflection ((θ )):(Q proportional to θ).
2. Formulate the Ratio Because of this direct linear proportionality, we can relate two different charges and their corresponding deflection throws using a simple ratio:( frac{Q{1}}{Q{2}} = frac{θ{1}}{θ {2}}).
Establish the Governing Formula in a standard ballistic galvanometer, the total electrical charge ((Q)) that flows through the moving coil is directly proportional to the angle of its first swing or deflection ((θ )):(Q proportional to θ).
2. Formulate the Ratio Because of this direct linear proportionality, we can relate two different charges and their corresponding deflection throws using a simple ratio:( frac{Q{1}}{Q{2}} = frac{θ{1}}{θ {2}}).
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