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
200 μC
400 μC
50 μC
25 μC
Answer: Option
Explanation:

swing is proportional to charge.

Discussion:
14 comments Page 2 of 2.

Aishwarya said:   8 years ago
What is Ballistic galvanometer?

Usama Akhtar said:   7 years ago
Q=kd.
100/25=4=k,
Q=4*50=200.

Rajii said:   6 years ago
Please anyone explain it briefly.

Sharon said:   5 years ago
200 is the right answer. Because deflection torque is directly proportional to current.


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