Question 199 of 276
Given below are two statements:
Statement I: If the number of turns in the coil of a moving coil galvanometer is doubled then the current sensitivity becomes double.
Statement II: Increasing current sensitivity of a moving coil galvanometer by only increasing the number of turns in the coil will also increase its voltage sensitivity in the same ratio
In the light of the above statements, choose the correct answer from the options given below:
Show answer and solution
Answer: (A) Statement is true but Statement is false
For a moving coil galvanometer,
The current sensitivity is given by
So, if is doubled then, the current sensitivity is also doubled.
The voltage is given by
The voltage sensitivity is given by
As, is increased, also increases. So, the voltage sensitivity does not change as remains constant.
The current sensitivity is given by
So, if is doubled then, the current sensitivity is also doubled.
The voltage is given by
The voltage sensitivity is given by
As, is increased, also increases. So, the voltage sensitivity does not change as remains constant.
