Which of the following statements is true of the properties of a moving coil galvanometer?
THe coil has a small area
There are strong hair springs to gives a large control panlel
There is a strong permanent magnet to give high magnetic flux
it has a small number of turns of coil
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Discussions (16)
Am i the only one noticing this?
Myschool says the answer is B but they are explaining for option C.
Maybe i should get some points for this excellent observation. For protecting subsequent myschoolers from learning or perhaps memorizing this mistake.
The answer is C
From New School Physics, the springs should be made of a thinner wire such weak springs give only a small control couple. Therefore, the answer can't be B.
Moving coil galvanometer is an electromagnetic device that can measure small values of current. It consists of permanent horseshoe magnets, coil, soft iron core, pivoted spring, non-metallic frame, scale, and pointer.
The selected Answer and explanation is wrong The answer is actually B
If u read the topic very well u would know that it is a soft iron core (temporary magnet) that is used instead of a permanent magnet (steel)
And u would also know that two non magnetic hair springs are used which produces a control couple
Myschool pls rectify
Reference New school physics
The right answer is option B,
There are strong hair string to give a large control cuople
