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.

CHANDAN KUMAR SINGH said:   9 years ago
Q = K(THETA).

Therefore, K = 100/25.
Then for 50 DEG Q = 100/25 * 50 = 200 MICRO COULOMB.

Shyam babu yadav said:   9 years ago
What is the formula for solving this?

Tawanda Moyo said:   1 decade ago
Why not x2 to give 200?

Cheetha said:   1 decade ago
What is the formula?


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